The inventory problem is caused by the following :-
In the financial system the data is sent to the GL at the date it is specified to be posted.
In Ostendo the Average cost price gets changed at the date the purchase receipt was physically posted. - ie current computer date
ie: If I dated the purchase receipt as 1 Nov and today was 19 Nov when I did the transaction, the stock would be received into MYOB on 1 Nov and in Ostendo the Average costs gets changed on 19 Nov.
If you run the stock valuation report on 1 Nov to match with MYOB to include this receipt, Ostendo stock would be valued at the average cost that was in operation at 1 November which could have no relation to the new average cost which is calculated on 19 Nov.