Computers are processed and moved with Resource Updating Manager sucessfully, however some time after the migration the computers lose the connectivity to the target domain and need to be manually rejoined before a user is able to log on. Error message on the client machine is: "The trust relationship between this workstation and the primary domain failed"
Synchronization is also running and computer accounts are synchronized between source and target domains.
This can be caused by synchronization modifying target computer account's Service Principal Name (SPN)
Moving the PC with RUM would change the SPN of the target computer account to include the domain name of the target domain. In order to prevent synchronization overwriting this with old information, it is recommended to exclude the servicePrincipalName- and userPassword-attributes of the computer accounts in the synchronization. This can be done by configuring the skip attributes window to skip these for computer objects.
Another option is to configure synchronization to skip disabled accounts (this is the default setting) and in RUM move task chose the option to disable source computer account.