Default AP Group profile inaccessible on USG Flex 700 using a converted configuration

@Ferro50 Thanks for your feedback. However, we cannot guarantee that the converted configuration is 100% working when applied to a USGFLEX/ATP with version 5.35 or above, as you can see, the converted configuration shows the version is v4.60 which we also recommend.
In conclusion, currently, I would suggest the workaround as you mentioned, apply to v4.60 before upgrading to the current version.

If you fail to apply the converted configuration to USGFLEX500 v4.60, please some screenshots for reference since I cannot reproduce this behavior, thanks.