The main difference is that the Aged Trial Balance (ATB) only looks at
current tables to give you the AR aging, whereas the Historical Aged Trial
Balance (HATB) looks at both the current and historical tables. So ATB is a
subset of the HATB. The ATB is also a little misleading, because it will
not give you a balance as of a particular date, it will give you all of your
open transactions aged as of that date.
As far as calculating the aging, the ATB will use what's been calculated by
the Aging Process (or to be more precise it will put the transactions in the
aging buckets they are already in according to the tables the report
checks), it's not doing any additional calculation to figure out the aging.
The HATB will actually calculate the aging based on your Receivables Setup.
It's not a formal definition, but I hope that helps.
I personally always prefer to use the HATB - it can do everything the ATB
can, plus more.
Dynamics GP MVP
Flexible Solutions, Inc.