When deploying a package with an epoch version identifier contained in the Version field of the Debian control file, it may 'trim' out the "Upstream" version identifier and cause Artifactory (4.6.0) to annotate only the epoch number for the version property.
Moreover, it seems that on 4.7.5 the version property does not annotate at all, even though the metadata calculation finishes successfully and the package information is included in the Packages file.
Steps to reproduce:
1. Run a dpkg-deb -f DEBIAN_PACKAGE.deb on a given package to verify it contains a version with epoch time
2. Deploy this file to a Debian repo in Artifactory
3. Obeserve the Version proprety after calculation either equaling epoch time (4.6.0) or not present at all (4.7.5)
Reproduction performed on Artifactory 4.7.5 and 4.6.0 and using this package:
External Debian Doc about Debian Versioning: