Hi @misael-esperanzate_5668,
Currently, ProGet uses the nexus-maven-repository-index.gz file to see what artifacts are in a Maven repository, and then downloads the files based on that. So you'll need to enable that index file by doing this, I think:
https://jfrog.com/help/r/jfrog-artifactory-documentation/maven-indexer
This only applies to Maven indexes, and that file is only used for importing/downloading a feed into ProGet. For other feed types, a different API is used.
Good news --- in an upcoming maintenance release of ProGet, we will be shifting to use the Artifactory API directly to import artifacts from a repository.
Thanks,
Steve