I too upgraded from 1.3.7.1 to 1.3.9h because of hack.

The store seems to be working ok, I use to use Paypal IPN for logged in customers and Paypal Express for the others. Redundant but it got me by successfully when the Express stopped working for awhile (a prior hidden hack I think, shut it off and later fixed)

Following directions and using my saved data, I noticed that PayPal IPN module, when removed then added, info went straight to Paypal Express module. I filled it out as needed and it will not let me do modules separate as before. Is this been coded in 1.3.9h as normal input behavior to switch IPN module to Paypal express?
Okay by me if that's what was intended.

It seems to work okay by trials on each (log in purch. or Express purch.) and appear the same to customer, but is it?