Merge Replication set varbinary(max) null

Hello,<o:p></o:p>

I have a SQL replication server working fine for years. I had the need to add a varbinary(max) to a table where the data is filled on distributor. When the data is replicated, the most the of times the filed is filled with null, replacing the original data on both sides. Any tip? <o:p></o:p>

Thanks and best regards.<o:p></o:p>

Sql Server Publisher version 10.50.1617<o:p></o:p>