We are trying to create a new custom search refiner based on an existing managed property.We have mapped the existing crawled property in people results to the RefinableString## in order to add it to the refinement panel. Although it shows up in the list of refiners, the real values are not shown. It has been 4 days since we did the mapping. Can you please let us know how to proceed
We had faced same issue in SharePoint Online environment. There is no problem with the process you followed. Once i read a SPO document where it was specified that continuous crawl happen every 15 mins and full crawl happens every 48 hours. But that was true for long back. Its almost over a year, we faced same issue, where full crawl happen after 7 days. After the full crawl we were able to get the right values.
It could be one of your case, you can raise a ticket with Microsoft for full crawl in such case.