Post mark in F03B13 before collection (work with drafts)


Hi all! Hope you are fine!
I´m having som problems with AR drafts. The normal procedure with a Draft is: 1) Create it with P03B602; 2) Remittance with R03B672; 3) Collection with R03B680.
F03B13.POST is updated with a 'D' after the posting of Collection batch. Not before.
So, the problem is that in some cases F03B13.POST is updated with a 'D' after posting of Draft creation batch. This situation not allows the posting of the Colletion batch becuase the F03B13 is already complete.
Did you have this issue before? do you know why it happens?
Thank you so much!