Tags not kept in group library

Budizz

I deleted all references/collections in a group library after I copied a collection from my personal library (mostly the same references deleted first, but with some modifications including tags modifications and collections organization). Strange behavior... the old tags came again and some completely new tags weren't import.

(In preference, the tags box is on in "When copying item to group library, includes"...)

Somebody can help?
Thanks!

Budizz

I know what happened, I should have empty trash before copying again the same references Zotero interpreted my second move of the same references as a restore of the trashed items.