Hi there, I noticed this issue few days ago. I was always using a trick to do the ground pour. Basically i create some masking area on the documents first, and then change those area to the top layer so it will create a nice shaped separation after pouring the Copper Area, like the picture showed below:  Then I save the copper area and it has no issues before. But since the lastest version coming up, the copper area will be repoured each time someone try opening the project and it destroy the copper Area automatically. I think it should at least let the user choose if the copper Area need to be repoured or not. Hope this bug can be fixed soon. Thanks a lot!