Updating maven dependencies refreshing maven model
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As a quick check, after doing the import that way, you should see a group called Maven Dependencies in the Libraries tab of the project's Build Path (in Properties dialog).
Maven is a build and dependency management tool, not an IDE; expecting it to manage IDE-specific stuff is silly, in my opinion (I realize the Maven team thinks differently, that Maven should be responsible for managing your IDE, but that's nonsense).
So if you have the project available on your system, delete any Eclipse-specific files (typically just Existing Maven Projects to import the project.
The root issue in my case was a file conflict in the .settings folder.
So, deleting the .settings folder would have resolved the Maven error, but I wanted to keep some of my local configuration files.