General Ledger Loading

I am doing some work for a client that is converting from PRMS to MAPICS.  We 
are currently working on converting the General Ledger application.  I plan on 
using the General Ledger Master offline file load through Cross Apps to load 
GELMAS with the basic account information for the type 1 record as well as the 
debit and credit amounts for each period that have been closed.  We will also 
load the budget and last year information with this process.  However, they 
want to do the conversion multiple times, once to check out the conversion and 
to be able to "play" in MAPICS and once when they are ready to go live.  I 
envision a problem doing this since MAPICS keeps up with status (closed/trans 
in TEMGEN, etc.) of each period in the SYSCTL file.  Years ago, I knew how to 
"massage" the period fields but it has been a while.  Does anyone have any 
experience with the SYSCTL fields and, if so, would you share it?

Thanks,

Rusty Jackson
Rusty Jackson And Associates
P.O. Box 20193
Knoxville, TN  37940