feel free to deride the newbie
I imported a Maven project by opening the pom.xml file.
Got some facets detected, etc. Started working on the project, was able to launch it through Tomcat, work with Data Sources and persistence OK.
Then, all of a sudden, I think I clicked something or hit some keyboard shortcut and all my packages in 1:Project (View as Packages) disappeared.
What did I do?
Didn't have any scopes, Ctrl-Z didn't work. I did NOT delete my project or packages.