Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to computer move to different OU.
- Please verify that AD health and Replication is good and all are synced. using dsdiag and repadmin /showrepl commands
- Please open Powershell and run below command to replace the computer name with the current may be you have this SPN already exist or open attribute editor and find serviceprincipalname
Get-ADComputer -Filter {serviceprincipalname -like 'computername'} -Properties serviceprincipalname | select serviceprincipalname
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