I'm importing 132 projects into a folder and all is working well, including even custom fields. The documentation is very good in this respect.
However, we tag all of our projects in multiple locations to make them easier to find for different people with different roles.
The import from Excel process only allows you to tag the project in the folder you are importing to. I'd like to have the ability to tag it in more than one folder during the import process.
The alternative is to import them once, then go through all of the projects individually adding the extra folder tags, which is very time-consuming.