Using the TPAM interface it is possible to bulk update/delete Systems and Accounts, but currently it is not possible to bulk delete Groups and Collections.
Is this possible?
WORKAROUND: There is no bulk update/delete of Collections prior to TPAM 2.5.
STATUS: This feature was added to TPAM 2.5.904 via BFER 3708. From the TPAM 2.5.904 Release Notes:
"Added Import/Update Collections menu item, which allows you to add, update or delete collection names."