THANK YOU for reporting this and the solution! So many people would not post the solution and leave the world wondering.
I was having just this issue and was working around it by setting the product to Variable before making any edits else I lost all config.
Cheers!
Man you are good!
Is there any documentation on the various switches available on the extensions?
I was mixing cell conditional formatting with row conditional formatting.
I will be certainly reviewing this positively and contributing monetarily.
Thanx
Dave!