Missing Achievement Score

As of last night, I have over 6k points worth of achievements missing from my gamerscore. When I go to the games, it shows that I've gotten the achievements, but the game still says something like 0/1000 score earned. Help please?

:)

 

Transfer of Xbox 360 achievement score to Xbox One

Hi there,

are you missing some achievements as score or missing everything from the 360?

When I look at your profile on xbox.com it shows both xbox one and 360 achievements and score.

 

xbox 360 achievements had disappeared

all of my xbox 360 achievements have disappeared. it hasn't given me any gamer score for them. it even shows my the date I've unlocked the the achievement but the whole game says 0 achievements and 0/1500 gamer score but the achievements underneath show
the date i have unlocked them. am i able to get my achievements back? i missing like e60k gamer score right now and its a killer!

 

Seen this quite a bit lately & had this happen to myself.

It's just a glitch.No idea why it happens but it will correct itself within a few days.

 

Been having the same problem as well for a while now. Unfortunately, it has not corrected itself over time. ☹️