diff --git a/.github/workflows/php.yaml b/.github/workflows/php.yaml
index 25e13e53f..b03e4f0e2 100644
--- a/.github/workflows/php.yaml
+++ b/.github/workflows/php.yaml
@@ -6,11 +6,6 @@ on:
         branches:
             - trunk
     pull_request:
-        paths:
-            - composer.json
-            - src/**/*.php
-            - tests/**/*.php
-            - .github/workflows/**
 
 concurrency:
     group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
diff --git a/src/Resources/app/administration/src/module/swag-migration/component/card/swag-migration-premapping/index.ts b/src/Resources/app/administration/src/module/swag-migration/component/card/swag-migration-premapping/index.ts
index e4c3854e4..7c63247be 100644
--- a/src/Resources/app/administration/src/module/swag-migration/component/card/swag-migration-premapping/index.ts
+++ b/src/Resources/app/administration/src/module/swag-migration/component/card/swag-migration-premapping/index.ts
@@ -73,29 +73,26 @@ export default Shopware.Component.wrapComponentConfig({
                 return;
             }
 
-            const filledOut = this.premapping.every((group: MigrationPremapping) =>
-                group.mapping.every(
-                    (mapping) =>
-                        mapping.destinationUuid !== null &&
-                        mapping.destinationUuid !== undefined &&
-                        mapping.destinationUuid !== '',
-                ),
+            await this.migrationApiService.writePremapping(
+                this.premapping.map((group: MigrationPremapping) => ({
+                    ...group,
+                    mapping: group.mapping.filter((mapping) => {
+                        return !!mapping.destinationUuid;
+                    }),
+                })),
             );
-
-            if (!filledOut) {
-                return;
-            }
-
-            await this.migrationApiService.writePremapping(this.premapping);
         },
 
         async onPremappingChanged() {
             this.migrationStore.setIsLoading(true);
 
-            debounce(async () => {
-                await this.savePremapping();
-                this.migrationStore.setIsLoading(false);
-            }, 500)();
+            this.savePremappingDebounced();
         },
+
+        savePremappingDebounced: debounce(function savePremappingDebounced() {
+            void this.savePremapping().finally(() => {
+                this.migrationStore.setIsLoading(false);
+            });
+        }, 500),
     },
 });
diff --git a/tests/Jest/src/module/swag-migration/component/card/swag-migration-premapping.spec.js b/tests/Jest/src/module/swag-migration/component/card/swag-migration-premapping.spec.js
new file mode 100644
index 000000000..3e0d7355b
--- /dev/null
+++ b/tests/Jest/src/module/swag-migration/component/card/swag-migration-premapping.spec.js
@@ -0,0 +1,146 @@
+import { mount } from '@vue/test-utils';
+import 'SwagMigrationAssistant/module/swag-migration/store/migration.store';
+import swagMigrationPremapping from 'SwagMigrationAssistant/module/swag-migration/component/card/swag-migration-premapping';
+import { fixturePreMapping } from '@/fixture';
+
+Shopware.Component.register('swag-migration-premapping', swagMigrationPremapping);
+
+const migrationApiServiceMock = {
+    generatePremapping: jest.fn(() => Promise.resolve([])),
+    writePremapping: jest.fn(() => Promise.resolve()),
+};
+
+const swagMigrationTabCardStub = {
+    name: 'swag-migration-tab-card',
+    props: ['items'],
+    template: `
+        <div>
+            <slot
+                v-for="item in items"
+                name="items"
+                :item="item"
+            />
+        </div>
+    `,
+};
+
+async function createWrapper() {
+    return mount(await Shopware.Component.build('swag-migration-premapping'), {
+        global: {
+            plugins: [Shopware.Store._rootState],
+            provide: {
+                migrationApiService: migrationApiServiceMock,
+            },
+            stubs: {
+                'swag-migration-tab-card': swagMigrationTabCardStub,
+                'swag-migration-grid-selection': true,
+            },
+        },
+    });
+}
+
+describe('module/swag-migration/component/card/swag-migration-premapping', () => {
+    let store = null;
+
+    beforeEach(() => {
+        jest.clearAllMocks();
+
+        store = Shopware.Store.get('swagMigration');
+        store.$reset();
+    });
+
+    afterEach(() => {
+        jest.useRealTimers();
+    });
+
+    it('writes partially filled premapping', async () => {
+        store.premapping = [
+            {
+                ...fixturePreMapping[0],
+                mapping: [
+                    fixturePreMapping[0].mapping[0],
+                    {
+                        ...fixturePreMapping[0].mapping[1],
+                        destinationUuid: null,
+                    },
+                ],
+            },
+        ];
+
+        const wrapper = await createWrapper();
+        jest.useFakeTimers();
+        const gridSelection = wrapper.findComponent({ name: 'swag-migration-grid-selection' });
+
+        gridSelection.vm.$emit('update:value');
+        jest.advanceTimersByTime(500);
+        await flushPromises();
+
+        expect(migrationApiServiceMock.writePremapping).toHaveBeenCalledTimes(1);
+        expect(migrationApiServiceMock.writePremapping).toHaveBeenCalledWith([
+            {
+                ...store.premapping[0],
+                mapping: [
+                    store.premapping[0].mapping[0],
+                ],
+            },
+        ]);
+    });
+
+    it('persists regenerated partial premapping after changing the data selection', async () => {
+        const regeneratedPremapping = [
+            {
+                ...fixturePreMapping[0],
+                mapping: [
+                    {
+                        ...fixturePreMapping[0].mapping[0],
+                        destinationUuid: 'mr',
+                    },
+                    {
+                        ...fixturePreMapping[0].mapping[1],
+                        destinationUuid: null,
+                    },
+                ],
+            },
+        ];
+
+        migrationApiServiceMock.generatePremapping.mockResolvedValueOnce(regeneratedPremapping);
+
+        await createWrapper();
+
+        store.setDataSelectionIds(['customersOrders']);
+        await flushPromises();
+
+        expect(migrationApiServiceMock.generatePremapping).toHaveBeenCalledTimes(1);
+        expect(migrationApiServiceMock.generatePremapping).toHaveBeenCalledWith(['customersOrders']);
+        expect(migrationApiServiceMock.writePremapping).toHaveBeenCalledTimes(1);
+        expect(migrationApiServiceMock.writePremapping).toHaveBeenCalledWith([
+            {
+                ...store.premapping[0],
+                mapping: [
+                    regeneratedPremapping[0].mapping[0],
+                ],
+            },
+        ]);
+    });
+
+    it('debounces repeated premapping changes into a single save', async () => {
+        jest.useFakeTimers();
+
+        store.premapping = fixturePreMapping;
+
+        const wrapper = await createWrapper();
+        const gridSelection = wrapper.findComponent({ name: 'swag-migration-grid-selection' });
+
+        gridSelection.vm.$emit('update:value');
+        gridSelection.vm.$emit('update:value');
+
+        expect(store.isLoading).toBe(true);
+        expect(migrationApiServiceMock.writePremapping).not.toHaveBeenCalled();
+
+        jest.advanceTimersByTime(500);
+        await flushPromises();
+
+        expect(migrationApiServiceMock.writePremapping).toHaveBeenCalledTimes(1);
+        expect(store.isLoading).toBe(false);
+    });
+});