Input import GST into MIRO as subsequnt debit
I want to input import GST in MIRO by subsequent debit.
Import GST will be paid by forwarder first, then charged us monthly basis.
So, when I receive invoice from forwarder,
I execute MIRO and refer to PO number, then I try to input amount in subsequent debit.
However, in this case, amount goes to PPV, not Input tax account.
So, after rerer to PO and select Input tax account in G/L account tab,
I can input, but in this case, link with PO seems to be lost.
Is there any good way to post to import GST amount to "input tax account"
without loosing connection with PO number?