Good Day Eric,
As a new user I am not familiar with the protocol for using this site. However I am grateful for any assistance that can be shared.
I am using Chief Architect Premier X13 (most current version loaded) on a MAC with Big Sur version 11.4. Chief appears to be functioning properly as far as opening, loading, saving, page refresh, etc.
However I have been working on this plan for some time and have not noticed any issues. Suddenly there has been this issue where I have been working on one level (1) and switched to level (2) only to find that the previously displayed floor plan for level (2) is missing. I have been able to search around the workspace to find a greatly reduced version of the level (2) work. This takes some time, but I bring that image to useable size only to find that the level (1) work is missing. While I can search, find and resize level (1) work, I am now in a vicious circle where I keep "loosing" my work when I switch between floor levels.
I have been able to retrieve my work by closing out the .plan file and reloading it, however I lose everything I worked on since the last save.
Please note the three files below. I was not able to send the .plan file because it is 60mb.
Your kind assistance helping this novice user would be greatly appreciated.
Robert Bytnar
Grand Cayman Island