MTHACTE net sales not always correct

We use the (COM add-on) MTHACTE file as the basis for a lot of bookings reports. We have intermittent problems where the net sales amount fields will not be correct. We can't produce the problem consistently for Infor support, but when it happens its usually for customer blanket orders that are processed thru the COM offline load. Since we upgraded to R7.8 in June Infor tech support has issued a couple of PTFs for us that eliminated most of the problems but not entirely. Does anyone else have a similar problem?
Thanks,
Vic
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