There are ways to bring that balance to next period any way quota is getting generated through time type ZAQT so no worries.
1)Time being with existing configuration can you do two things one is remove * in column D for PCR ZAQ3 and check whether working is not, If not
2) 2nd thing place your PCR with function P2006 ZAQ3 between line 800 and 810 then check whether it is working or not in both the cases but remove * in column D for PCR ZAQ3.
Regards
Venkatesh