For testing:
(1) I created an empty database with no other database being opened (2) used the new and empty db to index a testing macOS folder that has approx 50 pdfs in which are attached to over 50 different pre-existing Finder’s tags in total (3) import the index group (the macOS folder is automatically deleted by DT3 and the folder/files were moved into the db locally) (4) export the index group again (5) delete the local group in the database.
Somehow there are now two sticky tags under global>tags. As I understand that global tags is not a DT3 function so this could be a bug?