not existing revision ID used

[weaky]

I use Gerrit Change Set plugin 1.4.0-RC4 and Gerrit Change Set status notifier 1.7.0-107
I have created a pipeline B which has two materials, one is a gerrit repo 1, second is a upstream pipeline A which has a different gerrit repo 2 as material. Pipeline B fetches a build artifact from pipeline A.
If pipeline A has been successfully run, pipeline B starts, but with a gerrit revision which does not exist.
If I manually trigger pipeline B with an existing repo 1 number, it works perfect, also if I upload a change to gerrit repo 1, it triggers automatically with correct revision.

I think the problem has to do with this: The plugin materials of the repos are based on a devel branch. If a merge to the master branch is done, pipeline starts with a revision ID which only is temporary.

[weaky]

ok, it´s not depending on specific branch: If review is merged, pipeline is triggered with non/never existing revision id: If I copy revision id shown in VSM view, and search for it in gerrit web UI, it is not found. If I run pipeline manually with revision id copied from gerrit web UI after the merge is shown in web UI, it works. But this is a different revision id!