Closo runs bulk edits in batches — usually 5 items at a time, with a small pause between batches to keep marketplace APIs happy. If the page froze midway, what completed is permanently saved; what didn't is unchanged.
How to know what saved
Refresh the Inventory page and open a few of the affected products. A field is either saved with the new value or untouched — there is no half-saved state.
How to retry
Re-select only the unfinished items (Bulk Actions → Bulk edit, tick just those products) and re-run. Closo deduplicates — items that were already updated won't be touched again.