Partnership schedule M-2 reconciling with schedule L capital

[ZukaAdam]

Thought I'd find this topic addressed but didn't see anything with my search.  Given that M-2 balance is now required to be calculated on a tax basis, and ATX flows the amount from M-2 line 9 to schedule L line 21, and the balance sheet can be book basis, how is this adjustment done in ATX?  I don't find a worksheet or a link and ATX support isn't much help so far.  Or am I missing something?  Thx.