diff --git a/development/issues/closed/316.html b/development/issues/closed/316.html
index 8331ae4eac54b9a0eaabf250e0eb07bcd75d5732..7b440d898213faa3b09bfec3de897e2723c3ae63 100644
--- a/development/issues/closed/316.html
+++ b/development/issues/closed/316.html
@@ -15,6 +15,27 @@
 </ul>
 <main>
 
+
+    <h2>Select (multiselect)</h2>
+
+
+    <monster-select
+            data-monster-option-type="checkbox"
+            data-monster-option-filter-mode="remote"
+            data-monster-option-filter-position="popper"
+            data-monster-option-mapping-total="sys.total"
+            data-monster-option-filter-defaultvalue=""
+            value="2000"
+            data-monster-option-mapping-selector="dataset.*"
+            data-monster-option-remoteinfo-url="/issue-316.json?total"
+            data-monster-option-lookup-url="/issue-316.json?total"
+            data-monster-option-filter-defaultoptionsurl="/issue-316.json?default=true"
+            data-monster-option-url="/issue-316.json?q={filter}"
+            data-monster-option-mapping-labeltemplate="${name}"
+            data-monster-option-mapping-valuetemplate="${id}">
+    </monster-select>
+
+
     <h2>Select (no url)</h2>
 
 
diff --git a/development/issues/open/322.html b/development/issues/closed/322.html
similarity index 97%
rename from development/issues/open/322.html
rename to development/issues/closed/322.html
index f940ec28495430ad6731747578c709cf4a00f1a3..6df6382672ae1d03ef4fe3315280a394ea89cf12 100644
--- a/development/issues/open/322.html
+++ b/development/issues/closed/322.html
@@ -24,12 +24,11 @@
                 data-monster-option-features-emptyValueIfNoOptions="true"
                 value="0"
 
-
                 data-monster-option-type="radio"
                 data-monster-option-filter-mode="remote"
                 data-monster-option-filter-position="popper"
 
-                data-monster-option-url="/issue-316.json?q={filter}"
+                data-monster-option-url="/issue-322.json?q={filter}"
                 data-monster-option-lookup-url="/api/commerce/item/{filter}"
                 data-monster-option-mapping-selector="dataset.*"
                 data-monster-option-mapping-labeltemplate="${name} (${iid})"
diff --git a/development/issues/open/322.mjs b/development/issues/closed/322.mjs
similarity index 100%
rename from development/issues/open/322.mjs
rename to development/issues/closed/322.mjs
diff --git a/development/mock/issue-322.js b/development/mock/issue-322.js
index 7905ce2f8245d0fc1d5c94797d1a58be9a3f350c..61b3e9edd555e8dfcf3f270dc5bb292c1f250750 100644
--- a/development/mock/issue-322.js
+++ b/development/mock/issue-322.js
@@ -1,7 +1,7 @@
 const json = 
     `{
-    "dataset": {
-        "a25c3d99-e94b-43b9-c38f-0b20f5f645e2": {
+    "dataset": [
+         {
             "iid": 502,
             "name": "Versand",
             "masterNameLocale": [],
@@ -9,234 +9,60 @@ const json =
             "masterSKU": "",
             "masterNotice": "",
             "masterDescription": "",
-            "masterRootitemIID": 0,
-            "masterRootitemCombine": "0",
-            "masterProductfamily1": "",
-            "masterProductfamily2": "",
-            "masterProductfamilyCombinde": "1",
-            "masterFollowingIID": "",
-            "active": false,
-            "variants": {
-                "__UNIQUE__": ""
-            },
-            "variantsData": [
-                {
-                    "decription": "",
-                    "number": "",
-                    "text": {
-                        "de": "",
-                        "en": ""
-                    },
-                    "hide": false,
-                    "properties": null
-                }
-            ],
-            "packingUnits": [],
-            "salesAddon": 0,
-            "salesSetIID": "a:0:{}",
-            "salesChannel": [],
-            "salesStart": null,
-            "salesEnd": null,
-            "salesType": 30,
-            "salesCountry": [
-                0
-            ],
-            "salesCountryMode": 0,
-            "salesAnnouncementOrderGroupGID": [
-                0
-            ],
-            "salesAnnouncementOrderFlag": "0",
-            "salesAnnouncementOrderFrom": null,
-            "salesAnnouncementOrderTo": null,
-            "salesAnnouncementPriceFlag": "0",
-            "salesAnnouncementOrderTimegroupFlag": "0",
-            "salesPosition": 0,
-            "salesCompaniesRestriction": [],
-            "salesCompaniesAssignment": 0,
-            "salesCompaniesNoExport": "0",
-            "salesCompaniesShopFlag": "0",
-            "salesGroup": 100,
-            "salesQuantityRestriction": "",
-            "salesQuantityRestrictAmountPerOrder": 0,
-            "salesAffiliatesRestriction": [
-                0
-            ],
-            "salesDisabledpayment": [],
-            "catalogingKeywords": [],
-            "catalogingDepartmentDID1": 0,
-            "catalogingDepartmentDID2": 0,
-            "catalogingBrandBID1": 0,
-            "catalogingBrandBID2": 0,
-            "catalogingGender": "",
-            "catalogingCategoryCID1": 0,
-            "catalogingCategoryCID2": 0,
-            "catalogingCategoryCID3": 0,
-            "catalogingCategoryCID4": [],
-            "catalogingCollectionCLID1": 0,
-            "catalogingCollectionCLID2": [
-                0
-            ],
-            "catalogingAssignmentAAID1": 0,
-            "catalogingAssignmentABID2": [],
-            "catalogingAssignmentACID3": [],
-            "catalogingRasterRID1": 0,
-            "catalogingRasterRID2": [],
-            "catalogingImagesource": "",
-            "catalogingAudienceAUID1": 0,
-            "catalogingAudienceAUID2": [],
-            "catalogingSeasonSAID": 0,
-            "catalogingStyleSID1": 0,
-            "catalogingStyleSID2": 0,
-            "catalogingStyleSID3": 0,
-            "catalogingStyleSID4": [],
-            "specificationCOID1": 0,
-            "specificationCOID2": 0,
-            "specificationCOID3": 0,
-            "specificationCOID4": [],
-            "specificationWidth": 0,
-            "specificationWidthNormalizationFactor": null,
-            "specificationWidthViewNormalizationFactor": null,
-            "specificationHeight": 0,
-            "specificationHeightNormalizationFactor": null,
-            "specificationHeightViewNormalizationFactor": null,
-            "specificationDepth": 0,
-            "specificationDepthNormalizationFactor": null,
-            "specificationDepthViewNormalizationFactor": null,
-            "specificationWeight": 0,
-            "specificationWeightNormalizationFactor": null,
-            "specificationWeightViewNormalizationFactor": null,
-            "specificationWeightNet": 0,
-            "specificationWeightNetNormalizationFactor": null,
-            "specificationWeightNetViewNormalizationFactor": null,
-            "specificationMaterial": "a:1:{s:2:\\"de\\";s:0:\\"\\";}",
-            "specificationVolume": 0,
-            "specificationVolumeNormalizationFactor": null,
-            "specificationVolumeViewNormalizationFactor": null,
-            "specificationMaterialMAID": 0,
-            "specificationBasepriceReference": 0,
-            "sourcingPceControlSerialnumber": "0",
-            "sourcingPceControlChargenumber": "0",
-            "sourcingStockInventoryObligation": "0",
-            "sourcingDistributor1UID": 0,
-            "sourcingDistributor1Name": "",
-            "sourcingDistributor1Deliverytime": "0",
-            "sourcingDistributor1Number": "0",
-            "sourcingDistributor1DeliverytimeUnit": 0,
-            "sourcingDistributor1OrderPlugin": "",
-            "sourcingDistributor1ErpID": "",
-            "sourcingDistributor1ErpName": "",
-            "sourcingDistributor1ErpNumber": "",
-            "sourcingDistributor2UID": 0,
-            "sourcingDistributor2Name": "",
-            "sourcingDistributor2Deliverytime": "0",
-            "sourcingDistributor2Number": "0",
-            "sourcingDistributor2DeliverytimeUnit": 0,
-            "sourcingDistributor2OrderPlugin": "",
-            "sourcingDistributor2ErpID": "",
-            "sourcingDistributor2ErpName": "",
-            "sourcingDistributor2ErpNumber": "",
-            "sourcingDistributor3UID": 0,
-            "sourcingDistributor3Name": "",
-            "sourcingDistributor3Deliverytime": "",
-            "sourcingDistributor3Number": "",
-            "sourcingDistributor3DeliverytimeUnit": 0,
-            "sourcingDistributor3OrderPlugin": "",
-            "sourcingDistributor3ErpID": "",
-            "sourcingDistributor3ErpName": "",
-            "sourcingDistributor3ErpNumber": "",
-            "sourcingStockFlag": 16,
-            "sourcingStockMinCount": 0,
-            "sourcingStockEstimatedBalance": 0,
-            "shippingIncoterms": "",
-            "shippingNotOnPicklist": "0",
-            "shippingStoretype": 0,
-            "shippingHideOnDocument": "0",
-            "shippingPackaging": [],
-            "shippingPrePackagingUnit": 0,
-            "shippingPreventFromCosts": "0",
-            "manufacturerUID": 0,
-            "manufacturerName": "",
-            "manufacturerItemUrl": "",
-            "manufacturerColor": "",
-            "manufacturerOriginCountry": "",
-            "orderPreorder": 0,
-            "financesVat": {
-                "de": 0,
-                "gb": 0,
-                "fr": 0,
-                "at": 0,
-                "ch": 0,
-                "be": 0,
-                "cz": 0,
-                "gr": 0,
-                "hr": 0,
-                "it": 0,
-                "lu": 0,
-                "mc": 0,
-                "nl": 0,
-                "sk": 0,
-                "us": 0,
-                "sv": 0
-            },
-            "financesTaxcode": {
-                "de": "",
-                "gb": "",
-                "fr": "",
-                "at": "",
-                "ch": "",
-                "be": "",
-                "cz": "",
-                "gr": "",
-                "hr": "",
-                "it": "",
-                "lu": "",
-                "mc": "",
-                "nl": "",
-                "sk": "",
-                "us": "",
-                "sv": ""
-            },
-            "financesBought": 0,
-            "financesDiscountable": 0,
-            "financesRevenueInland": "",
-            "financesRevenueAbroad": "",
-            "financesRevenueEU": "",
-            "financesRevenueEUID": "",
-            "financesCostInland": "",
-            "financesCostAbroad": "",
-            "financesCostEU": "",
-            "financesCostEUID": "",
-            "financesCustomsTariffNumber": "",
-            "financesCustomsTariffDescription1": "",
-            "financesCustomsTariffDescription2": "",
-            "sourcingStockEdiDeactivateSKUCheck": "",
-            "marketingAlsobought": "",
-            "marketingCommendation1": "",
-            "marketingCommendation2": "",
-            "marketingCommendation3": "",
-            "marketingCommendation4": "",
-            "marketingCommendation5": "",
-            "marketingCommendation6": "",
-            "marketingFlag": 0,
-            "marketingExtraUrl1": "",
-            "marketingExtraUrl2": "",
-            "marketingExtraPage": "",
-            "salesAnnouncementRestrictionGroupGID": "0",
-            "erpID": "",
-            "erpName": "",
-            "erpNumber": "",
-            "erpLastUpdate": "2025-04-10T07:12:53",
-            "erpCreation": null,
-            "archived": true,
-            "localStrings": {
-                "salesType": "Systemintern",
-                "salesGroup": "Versandkosten"
-            },
-            "property": {
-                "dataset": []
-            }
+            "masterRootitemIID": 0
+        },
+        {
+            "iid": 503,
+            "name": "Versand",
+            "masterNameLocale": [],
+            "masterNumber": "Versand",
+            "masterSKU": "",
+            "masterNotice": "",
+            "masterDescription": "",
+            "masterRootitemIID": 0
+        },
+        {
+            "iid": 504,
+            "name": "Versand",
+            "masterNameLocale": [],
+            "masterNumber": "Versand",
+            "masterSKU": "",
+            "masterNotice": "",
+            "masterDescription": "",
+            "masterRootitemIID": 0
+        },
+        {
+            "iid": 505,
+            "name": "Versand",
+            "masterNameLocale": [],
+            "masterNumber": "Versand",
+            "masterSKU": "",
+            "masterNotice": "",
+            "masterDescription": "",
+            "masterRootitemIID": 0
+        },
+        {
+            "iid": 506,
+            "name": "Versand",
+            "masterNameLocale": [],
+            "masterNumber": "Versand",
+            "masterSKU": "",
+            "masterNotice": "",
+            "masterDescription": "",
+            "masterRootitemIID": 0
+        },
+        {
+            "iid": 507,
+            "name": "Versand",
+            "masterNameLocale": [],
+            "masterNumber": "Versand",
+            "masterSKU": "",
+            "masterNotice": "",
+            "masterDescription": "",
+            "masterRootitemIID": 0
         }
-    },
+        
+    ],
     "sys": {
         "pagination": {
             "total": 1,
@@ -269,19 +95,6 @@ export default [
                 res.end(json)
             }, 10);
         },
-    },
-
-    {
-        url: '/issue-322',
-        method: 'post',
-        rawResponse: async (req, res) => {
-            res.setHeader('Content-Type', 'application/json')
-            res.statusCode = 400
-
-            setTimeout(function() {
-                res.end(json400Error)
-            }, 10);
-        },
     }
 
   
diff --git a/source/components/form/select.mjs b/source/components/form/select.mjs
index 59e23f9cccec6ee0897decbf873976d08e9d44a8..4a0cd4e103186b13361ccf72c9c4e545be6ae53e 100644
--- a/source/components/form/select.mjs
+++ b/source/components/form/select.mjs
@@ -2438,20 +2438,42 @@ function gatherState() {
         throw new Error("no shadow-root is defined");
     }
 
-    const selection = [];
-    const elements = this.shadowRoot.querySelectorAll(
-        `input[type=${type}]:checked`,
-    );
+    let filteredSelection=[];
+    if (type === "radio") {
+
+        const selection = [];
+        const elements = this.shadowRoot.querySelectorAll(
+            `input[type=${type}]:checked`,
+        );
+
+        for (const e of elements) {
+            selection.push({
+                label: getSelectionLabel.call(this, e.value),
+                value: e.value,
+            });
+        }
+
+        filteredSelection = selection;
+
+    } else {
+
+        const selection = [...this.getOption("selection", [])];
+        const allElements = this.shadowRoot.querySelectorAll(`input[type=${type}]`);
+        const checkedElements = this.shadowRoot.querySelectorAll(`input[type=${type}]:checked`);
+        const currentInputValues = new Set(Array.from(allElements).map(el => el.value));
+        filteredSelection = selection.filter(sel => !currentInputValues.has(sel.value));
+        for (const input of checkedElements) {
+            filteredSelection.push({
+                label: getSelectionLabel.call(this, input.value),
+                value: input.value,
+            });
+        }
 
-    for (const e of elements) {
-        selection.push({
-            label: getSelectionLabel.call(this, e.value),
-            value: e.value,
-        });
     }
 
+
     setSelection
-        .call(this, selection)
+        .call(this, filteredSelection)
         .then(() => {
         })
         .catch((e) => {