To fully support the unichar and univarchar datatypes, both the primary and replicate Replication Server must be running version 12.5 or later.
To fully support the unitext datatype, both the primary and replicate Replication Servers must be running version 15.0.1 or later, the route version must be 15.0.1 or later, and the LTL version must be 700 or above. If the LTL version is less than 700 at connect-source time, RepAgent converts unitext columns to image.
The RM route upgrade feature copies replication definitions referencing unichar, univarchar, and unitext datatypes from upstream Replication Servers.