Data Loss in merge replication

Hi,

I have a server with SQL 2008 as publisher and several Laptops with SQL 2008 R2 as subscribers (push).

Our customer is complaining about sporadic data loss on the subscriber side. The inserted record has disapeared on the subscriber side and I think was never uploaded to the Publisher (?). Is there a way to check out what records have been uploaded to the publisher?

Does someone have a SQL-Script based f.ex. on msmerge_Contents to get some "readable" data out?

BTW. no filtering is active.

Thanks,

Patrick