How to sync data between old and successor server?

Hello dear support a members, i plan to copy my cpanel users accounts from one WHM v74 virtual server (which i will be deleting) to another WHM v70+ virtual server on which most of these cpanels already exist (this VPS server is restored from backup and i want it that way), both VPS running on same dedicated server. The process of all cpanels migration via WHM can be very slow in my case (i have very slow HDD regarding IOPS) causing unacceptable downtime and also my new server will have same IP as old one. So i am thinking if i can save resources and minimize downtime by backing up and restoring using /scripts/restorepkg the way that it will not overwrite already existing users files, but only write new and changed ones. If that is not possible, i would have to delete all cpanels on destination and do standard /scripts/pkgacct & /scripts/restorepkg betweens servers for all cpanels. But before the backup & restore is finished, the source server files and mysqls will get updated by websites visitors in the meantime, which means i will need to run continuous rsync on files between live and successor server and then write and run script to backup mysqls, set them as read only on source, restore/replace mysqls on destination server and stop files rsync & switch server IPs. 1. rsync files, i found following command: rsync -aqHl -e ssh /home/* root@destinationip:/home/ Here i have doubt about following files/folders: drwxr-xr-x 5 root root 4096 Apr 22 2014 .cpan/ drwxr-xr-x 3 root root 4096 Oct 8 2017 .cpanm/ drwx------ 3 root root 4096 May 3 04:36 .cpcpan/ drwx--x--x 13 root root 4096 Jul 13 22:55 virtfs/ I know virtfs is somehow essential for work -