Welcome to the OptoForums! In general, we encourage folks to submit any issues they're having to our support team since they're best equipped to try to reproduce the issue(s), find out if there might already be a fix in the works, and get you an update/beta if appropriate.
When you mentioned "something that has been change in configure mode in PAC control" -- I've seen issues where I might have PAC Control open and be re-naming a tag then have a problem in PAC Display when I try to autocorrect/update those tags (especially I/O Units). I've been told it wasn't designed to handle that, therefore: "if a strategy is modified, the project should be closed in Configurator." However, I'll submit a request for PAC Display to check for updates to the strategy at times like this, since now I know I'm not the only one who's tried that and had trouble!
In the meantime, please let our support team know about any/all other issues you've seen, as we like to get those fixes ASAP!