I successfully imported these extensions from a csv, but now all the destinations are in error. How do you fix this?
In your csv file for the destinations you didn’t put them in as quotes.
EG it should be:
thing,thing,"ext-local,366,dest"
instead you did
thing,thing,ext-local,366,dest
Which just confuses everything
can I just redownload and reimport?
I would manually fix one extension, export everything, work with the CSV (excel) to apply the same fix to all other extensions, and then reimport.
how do you manually fix each one when they are all red?
from the page where you took the screenshot, change the drop down to the values that you need and save, then export, in the exported file the extension you have changed can serve you as a model for the other extensions.