When running a mail merge for three accounts (4483, 73085, 77653) in Fundraising the query builder adds: And Members.Code In (Select Code From Members Where FieldInSub 1=1 And Code In (4483, 73085, 77653))
This takes several minutes to complete.
If the code is rewritten as: And Members.Code In (4483, 73085, 77653)
it finishes in a few seconds.
Can this please be changed?