Apologies for the delay in answering this post. As I understand you are looking for information on import configuration for Device writeback on your new Azure AD Connect Server.
Comparing the originally imported settings file with the exported settings file of the newly deployed server is an essential step in understanding any differences between the intended versus the resulting deployment.
However there is known limitation with Device Writeback configuration while performing import to the new Azure AD Connect Server. They aren't currently applied during configuration. If device writeback was enabled for your original server, you must manually configure the feature on the newly deployed server, same has been documented here
Reference on how to enable device writeback - https://learn.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-device-writeback
Let me know if you have any further questions.
Please remember to "Accept Answer" if answer helped, so that others in the community facing similar issues can easily find the solution.