Feature summary:
It would be helpful if, in addition to the existing "delete" option on Special:PageMigration, you could just "clear contents" and not delete the box itself.
Use cases:
There are times when you are migrating content with lingering English content. Sometimes that content is properly placed such that you do not want to "delete" it (which then moves all boxes below it down) - but just clear it.
Benefits:
This can be done manually, either by deleting and then reinserting a blank box - or by just selecting all text and deleting it within the box. However, an additional "clear contents" button would be helpful and speed things up sometimes.
