We have come across a situation where the hosted fixtures (to a linked ceiling) are randomly moving around. We were able to identify that it happens when the arch adjusts walls. We contacted ADSK and the response is below.
"This is an update to your Support Request. Our development team has reproduced your reported issue. Your Support Request is now with a review board to determine next steps. Taking into account the severity and associated risks identified in your Support Request, the issue may be remedied; if so, a tentative date will be set for the remedy.
The development team will notify us of the review board's decision and we will notify you immediately by email whenever your Support Request is updated. We appreciate your patience as we work to resolve your Support Request.
Please note: Not all issues identified in Support Requests are considered significant enough to address in their entirety; a proposed correction may create significant stability risks; some issues may be impossible to fix due to product architectural restraints. Whenever possible, we will work with you to establish an acceptable workaround.
For now, until I receive more information, the best workaround I can provide is to rehost the light fixtures after they've moved."