Had a restriction put on my licence by the UK CAA few years back. They said come back in 6 months with similar good results and we'll remove your restriction. 6 months later, despite good results they extended my restriction again. No reason given. Went to another CAA with my case. They did not see any justifiable reason for my restriction. Transferred my medical to the new CAA and got my full medical back. Haven't had any issues since.
Check with other jurisdictions, you might well be surprised of the result... hope that helps.
Linda787
PS: I originally started an appeal with the UK CAA but because of the time frame involved (months ?? Years ??) and the uncertainty of the result, I decided to just switch authority right away. Within 2 weeks with the new CAA I had my full medical back