[solved] Cleaning up field tags

[Hurme]

Hi,

Field tags, the ones used for grouping up fields in the backend, used to have this feature where you add a "-" in front of one of them and it collapses the group. Now after updating PW the new tag editor is nice, but it's impossible to delete the old -tags. 

How does one clean those up? Renaming one doesn't do anything. Neither does removing the fields inside one. It seems the "-" in front of the name is preventing PW from changing them. Do I need to delete them manually from the database? And if so where from?

EDIT: Figured it out myself. You have to go through each individual field and remove or change the tag name from there, instead of using the tag interface.