Weird replication problem

Hi All,
I have a database with one replica that we've been using for about a month

and synchronizing each day with no problem.

However, today I synchronized and happened to notice that a few specific 
changes that I know were applied in the replica didn't replicate to the
DM.  
I went back and checked the replica and the changes are, in fact, in there

but did not come through.  Other changes did replicate correctly....

I did not recieve any errors or conflicts during the synchronization.

It seems that all of the changes that are not coming through are in one 
specific table.

Two questions:
1.  Any idea what would cause this type of behaviour or how to correct it?
2.  It is very worrisome to me that there was no inidication of any
problems 
during synchronization and only coincidental that I noticed the problem - 
what up with that?

Thanks in advance for any thoughts.
Joe