So has anyone been able to solve the issue with PayPal payments not being recorded in SO tables or being calculated in super_order.php?

I tried the solution posted Here but it had no effect. Nothing is going into so_payments unless I manually enter them. Looks like the code above should work at least to make the Balance Due accurate, but it never gets written anywhere.

Zen 1.3.8a, SO 2.0 rev47