Virtual Reppository doesnt update


Im stuck with a weird problem at the moment. I got a Maven2 Releases repository where we upload our artifacts from some components and and virtual repository pointing at it and from which we are then downloading our packages in the build pipeline. Works like a charm so far.

We discovered a problem lately when we had some files merged back in a release and we were building the component again. We do this regualrly and never had any issues by now.
In our Releases repository everything is fine but in the virtual repository there is one folder that dont get updated to the new sources and so our ongoing build pipeline is missing the updated sources.

I tried to expire the cache and update Index and trigger the build again, always with the same behavior.

Anyone got a clue/workaround?