I have a requirement to move an entire site collection to a different server. The backup can be done through central admin.
The issue is that the new server, isn't really new. It has SharePoint 2010 installed with several old versions of all the custom webparts/features/pagelayaouts that are in the newer version. Essentially there are several out of date WSP package files that are currently deployed on the "new" server.
If when doing a restore, will I run into any issues, or will it be necessary for me to remove all the old files first.
Also, is a new site collection required to be created when performing the restore, or can I restore it to an existing site collection?
Also, do all OOB features in sharepoint need to be the same version on the restored server as the backuped server?