The PlasticSCM GUI does not allow you to edit the paths of Workspaces (you can either rename a workspace or delete edit; no other editing options are available).
Luckily you can do this by hand editing the configuration files in %LocalAppData%\plastic4
, though this is largely undocumented
Some of those configuration files are explained in [WayBack] Configuration files – Installation and configuration – Plastic SCM Community, but plastic.workspaces
is not, so here are the steps: