Trex System Copy back

Hi guys,

Is there a TREX system copy guide?

We are doing a ERP and CRM export import copy back...

I also wanted to do TREX but cannot find a guide.

Or do I just do a reinstall?

I have seen post

Possible to migrate installation w/ SLD to new system using 'tar'/'untar'?

But it seems quite old and just want to double check