Decrease in Merge Requests and Notes After Upgrading GitLab from 16.10.1 to 17.0.1

Hello Community,
I recently upgraded my GitLab instance from version 16.10.1 to 17.0.1. After the upgrade, I noticed a significant decrease in the number of merge requests and notes. everytime issue faced Any assistance in resolving this issue would be greatly appreciated.
Thankyou.