GR/IR clearing issue

Hi Guys,

I have an issue related to GR/IR clearing (F.13)

we found there are so many PO's which cannot be cleared. Issues are below

1. For some PO's there is currency difference (They have done MIGO & MIRO but after 2 years they had reversed the MIGO)

2. For some PO's they have done MIGO but there is no MIRO document

all documents are very old ( from 2007) documents (PO's).

Please suggest us how to resolve above 2 issues for clearing GR/IR clearing through (f.13)

Thanks all

Suri