As per the instruction provided in this link renamed one of the gerrit project. However now don't see this project changes in Open, Merged, Abandoned list. Something is wrong in the process of renaming?
Our gerrit version is - 2.13 and offline indexing will impact the productivity. Online is it possible to perform this particular project and changes indexing only?
You could try these two related options:
Note: your Gerrit version is really old, you should think seriously in an update to a newer one.