I upgraded from v2015 to v2016 today, and I have noticed that a user parameter that is derived from another user parameter is not upgraded properly.
In the attached Workspace, I am creating a SiteName parameter based on the input filename. And I also create a SiteNameGDB parameter for the output filename, based on the SiteName parameter. Unfortunately, when opening this workspace - which worked fine in v2015.0 - in v2016, it has replaced the expression $(SiteNameGDB) with the literal string "__SiteNameGDB_"
Is this a bug?