Once a Replicated object (i.e.: created by importing a Replication Package) has been but in a Promotion Request, it is no longer possible to update it via another Replication Package.
The next import fails saying the object is part of a baseline (the baseline automatically created for the Promotion Request).
Since this is a blocking issue, Windchill should totally forbid adding replicated objects ("administrative lock") inside a Promotion Request instead of just showing a warning as shown on the screenshot below.
=> This request is to replace this warning by a blocking error to prevent the situation when import of Replication Packages is no longer possible