Upgrading apt 1.7.1 to 1.8 help

I am currently running OH on 1.7.1 on debian with a few 1.8 bindings due to misc issues or bugs. I am wanting to update to 1.8 or maybe go for broke and go full OH2. It is a VM so I can always take a snapshot just in case. Is it as simple as overwriting the OH 1.7.1 working directories with the snapshot and updating config files?

Probably for the upgrade to OH 1.7.1 to 1.8 but I suspect not to go to OH2.

Personally I would install 1.8 separately and move my configs, addons, and webapps over to it rather than overwrite my 1.7.1 install. I don’t think that is required but I’ve been burned enough in the past with other software that I tend to be cautious.