Archiving document with attachments

Domino Version 8.5.1 FP2 and client 8.5.1.We are using a base archiving policy for older 365 days documents.

When we manually archive (drag to archive icon) a document with more attachments we can’t read/open archived attachement anymore.We obtain following message : " Invalid or nonexisted document : could not save to file …"

Domino system suggests an fixup operation but after this we loose entire document.

Any suggestion , please ?

thanks