Recently updated to version 0.7.7 of the Jenkins AccuRev plug-in.
Unfortunately this seems to have broken the "Ignore parent changes" function.
When this function is enabled, I get the following message in the polling log:

Started on Jan 18, 2017 11:06:00 AM
No workspace required.
Running commands from folder "C:\workspace\Jenkins\jobs\Utilities\jobs\MultiProgram"
[MultiProgram] $ "C:\Program Files\AccuRev\bin\accurev.exe" info -H accurev:5050
Currently authenticated with Accurev server as 'CI', not logging in again.
Stream not found or Accurev login failed.
Done. Took 93 ms
No changes

When I disable this option, everything works fine. Note that it did work with the snapshot version I had while working on PR #37.