It wasn't totally ignored, since Barbara realizes the work she makes as Oracle even if she was called Batgirl in a backup story.
Also, the backup where Dinnah, Helena, Cassandra and Stephanie appear has a caption for Barbara where appear the name Batgirl/Oracle.
Castellucci says there were plans for other status quo (5G) that was canceled. However, her last issue is likely part of the new plan.
Castellucci allso mentioned in a recent interview that maybe the Batgirl comic has ended, but she is sure there will more about Barbara/Batgirl:
https://www.gamesradar.com/amp/barba...irl-50-finale/
I think it is pretty likely Barbara will be Batgirl and Oracle at the same time.
Considering how Cassandra and Stephanie are called Batgirls lately, it is pretty they will also have double alias.