Due to data mismatch because of wrong customization and lack of accuracy into the existing development need to re-customize entire development, shall move my data from Production to UAT while I'm doing reimplementation of this project?
You can try to contact Microsoft Support and ask them if they would be willing to do so. I have doubts here if you are already live. In case you need to correct data, the better approach would be to copy the database to a UAT environment. Prepare data correction scripts, run, and test them. After careful testing, you can then apply the same script on a production environment.
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