Hi Ron, so just to clarify -

Shortcut key definitions are stored in moi.ini, and by default moi.ini is created in a central location in the %AppData% folder (or inside your home directory on Mac) and shared by all instances of MoI, so those come over by default unless you've set things up specifically otherwise. The other way of setting it up is if you've moved your moi.ini file to be alongside MoI.exe as Max has done. That can be done to make MoI work as a more self contained package that only occupies one folder if you want to move it around to different computers on a USB key for example. If you've done that then you will need to copy your moi.ini file over to the new installation folder yourself.

For plug-in commands, those are usually contained in new files that you have copied into the \commands sub-folder. Those same files will need to be copied into the new installation's \commands folder as well. The easiest way to do that is to just copy the entire contents of the \commands folder from the last beta over to the new installation \commands folder and then when the operating system asks you whether you want to overwrite files say no so only the files that you had added in will get copied.

For UI customizations, that can be a more complex area - normally you would need to repeat whatever specific edits you did to customize the UI .htm or .css files. Under regular circumstances it's not a good idea to just copy your entire old UI files in place of the new release's same UI files because that will lose any new UI changes that are in the new release for new features. So you have to edit the files and merge in your changes in the same way you initially made the changes before. In this one particular case from the last v3 beta version to the v3 final version, there happens to have been only very minor cosmetic changes in the UI so for this particular migration it would work to copy the last v3 beta's UI files (contained in the \ui subfolder) over top of the final v3 release's \ui files. You will only lose some minor changes in this particular case. But during the beta release cycle it's not a good idea to do that since like I mentioned before you will lose newly added UI if you just do a straight copying with overwriting the files.

Customizing the UI is generally a more delicate area and I'd really just recommend not doing it if you're not comfortable editing text files and merging your changes in and keeping track of what you've changed.

- Michael