Why won't the old Additional Variation Images extension reactivate after migration?

Separate activation from missing images

Treat these as two questions: can the retired extension reactivate, and did each variation’s images migrate into the native gallery? A migration can leave usable native data even when the retired extension cannot be reactivated. Conversely, successful activation alone does not prove that assignments migrated.

Before changing plugins or product data, make a non-destructive copy of one affected product or work in a staging environment if available. Record the product and variation identifiers and preserve the original export. Avoid editing custom fields by guessing: the retired extension and native gallery use different fields.

Use one variation as the reference

Export one variation whose images were assigned manually and whose gallery you can still inspect. Use that export as a format reference for the migrated variation; do not assume a field name or value format from another site or extension version.

Compare the reference and affected variation exports for the media-related custom fields and their values. Then inspect the corresponding variation in the WooCommerce product editor and note which images are actually assigned. This distinguishes an absent assignment from an assignment stored under a field the native gallery does not read.

Follow the evidence

1. 1. Record the exact activation message or failure state, without repeatedly toggling activation.
2. 2. Export one manually configured reference variation and one affected migrated variation; keep the originals unchanged.
3. 3. Compare their media-related custom fields, then inspect the affected variation’s gallery in the product editor.
4. 4. Choose the next action from the observed result: if native gallery images are present, leave the retired extension alone and verify the storefront output; if the gallery is empty but the reference export shows assignments, investigate the migration or field mapping using the exports; if the exports show no relevant assignment, return to the source product or backup before making edits.
5. 5. On a test copy, make only the correction supported by the export and editor evidence, then inspect the saved variation again.

Illustrative exercise

Illustrative exercise: define two fictional assets before comparing them. “Reference mug” is one manually configured variation with image values recorded in its export as “mug-front” and “mug-side.” “Migrated mug” is a separate variation whose export contains “mug-front” but no second media value. These labels and values are illustrative, not actual WooCommerce field names or a tested migration result.

Compare the two exports and the editor display. If the migrated mug’s native gallery shows both intended images after an evidence-based correction on the test copy, that copy passes this check. If it shows one image, none, or an unexpected image, it fails: preserve the original data and investigate the mapping rather than copying a guessed field name.

Define a narrow acceptance check

Accept the test only when the affected variation shows the intended images in its native gallery after saving, the same variation is identifiable in the export, and the storefront displays those intended images for that variation. Record the observed activation error separately; gallery correctness does not establish that the retired extension can or should reactivate.

If you cannot map the exported values to the editor’s native gallery with confidence, stop before editing custom fields. Keep the export and the exact activation message for further troubleshooting.

Scope of the documentation

The official references below support tool behavior and feature boundaries. The test fixture, branching decisions and acceptance criteria are Itemlume editorial recommendations; citation does not imply endorsement. Illustrative sizes, names and timings are not your production specifications.