I’ve just noticed that this feature is missing from 4.8:
Where has it been moved to?
Selecting e.g. ten or more material instances and reassigning all of them to a new parent with one click is an invaluable feature and a crucial part of my workflow.
I know you can still do the reassignment one-by-one but that method is very time consuming considering the 4.6 PropertyMatrix multi-select option saved you from having to do it the laborious way.
Note: The ‘Open Selection in Property Matrix’ button doesn’t do the same thing!
Please tell me the missing menu item has simply been moved somewhere else and not removed.