Hi,
woah, yes, this might be tricky... there are tons of deprecated features between the two unity versions... However, I did recently such an upgrade and it went ok, so if you are patient, it will be ok hopefully.
why 2018.2.4f1 specifically?
here's how I would do this:
- Backup ( hard copy of the whole project )
- first you need to update PlayMaker to the latest
- you verify it works in 5.4.2 across the board ( publishing included)
- Backup ( hard copy of the whole project )
- move to 5.6
- verify it works across the board ( publishing included)
- Backup ( hard copy of the whole project )
- Move to 2018
- verify it works across the board ( publishing included)
This is assuming you only have PlayMaker in your project, chances are you'll have other assets from the asset store, MAKE SURE you follow the same principle, and update ALL your assets prior moving up in Unity versions.
Do not carry errors from the console from one version to the other. Your project must work perfectly before you upgrade, else some editor scripts might not run and that is when corrupted data occurs.
There is no documentation on this yet. Maybe we should do one yes.
Bye,
Jean