Querytool- query run with query ( run as patientset)-erroring out

drag and drop a previous query (which has been run as a patient set) onto the query tool name box
Notice the patientset in the group panel displays as 'patient_set_coll_id'
Run the query

Expected result: Query run successful
Actual result: Query erroring out

Note: checked in prod version on i2b2.org/webclient
and the query is erroring out there as well, but the dropped patineset is not displaying as 1)patientset of...'