In the properties window at the ranks there is a new section for the mymap command.
If you change the small maps, it doesn't save the value.
When manually changed, it auto set it back to 5.
Also, i can make 6 small maps if the value is 5.
I am getting the message "All your 6 slots are used."
Edit:
Problem found.
It counts all the slots (small/medium/big) as 1.
I added 2 medium slots and i can make 7 small maps (even when small is set to 5).