I want to edit the filter to add closed incident to a problem.we are in xanadu version.

[Ankur Bawiskar]

@Aniket Gaurikar 

then some ACL is blocking it

Did you check that?

check this

Not able to link Inactive Incidents(Closed) to Problem record 

How can ITIL user(s) add 'Closed' Incidents to a Problem Record? 

If my response helped please mark it correct and close the thread so that it benefits future readers.