I don't need to reinstall trs19 - it's always been there! However, I like the idea of attempting to transfer my 22 route over, but I have found before that transferring in Mac is not all that simple: ie so far, I've never managed to do it.
To start with, I'm not sure what you mean by "config file" - I know tzarc but not much else. I recently tried to find out how big my file was, but was never sure I had found it. There are too many files with the same name and others that might be among the right one, that have meaningless names.
Sorry mate, I should had made it clear! Thought you would had known about the config file. A config file can be opened via Content Manager, filter to show 'My Content' find your route in the list, right click | Open | Edit config file text change Trainz-build to 4.6 save & exit the config file, right click on your route and choose 'Sumit Edits'. Right click and export your route to CDP, giving it a name.
To move over content, you generally can't move content from TRS22 to TRS19 especially if it's built-in to TRS22 or TRS22 payware addons. I wouldn't advise attempting to do it either, you'd certainly have a lot of missing dependencies or may cause something to break in TRS19 that's not broken.
To move content from TRS19 to TRS22
You will need either
WinRar, WinZip or 7Zip this will allow to compress the folders + files to backup 'hence so you can back it up to your backup drive'.
Navigate to your user data, I'm not sure where it would be on Mac or Linux.. By default on Windows it's
C:\Users\%Username%\AppData\Local\N3V Games
%Username% is a code that Microsoft users, same as %temp% is another example, so it's completely safe to use..
Next open, TANE/TRS19 folder followed by build xxxxxxxx 'xxxxxxxx, means a unique code! It's NOT the same for everyone'.
Now, back up the following folders
Local
Original
Packages
If you build routes, backup
Backups
Editing 'IF you have anything inside this folder'.
Optional
Screenshots, if you wish to keep a copy of your screenshots.
Once you have backed up, you be able to extract using either WinRar, WinZip or 7Zip to TRS22\Build xxxxxxxx folder
Then you will need to log into Trainz first 'if not done so already!' Click on 'Developer' then 'Rebuild Database'. Allow this to complete and DO NOT attempt to play the game. Exit once completed, then reload Trainz and you can now play the game.
Note: If you are using Steam, make sure that you have completely exited the game before relaunching after the database rebuild.
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DO NOT export payware or built-in content to CDP! I will mention this.