Editor UI transform issue (not saving) ok in unity 2021 but not unity 2022

Questions & Answers
1

Have a production unity project working ok in Unity2021.3.28f but not in unity 2022.3
I migrate the project to Unity2022 & the editor scene doesn’t open correctly (just shows lines in the editor viewport) - I can fix this by closing the scene tab & reopening the window but…
My UI is messed up - panels & images in wrong place and although I can edit the rect transform to correct the layout & save it - reloading the scene wipes out my rect transform changes?

Is there an issue with migrating UI canvas layouts from 2021 to 2023?

2

One thing what worked for me was making whole scene or canvas as prefab and exporting it as a package and importing in newly unity version project.