I can confirm this problem in the beta version after the upgrade to 26.0. I didn’t pay attention if this worked in prior minor updates. Perhaps the transfer is handled differently in the beta than in the release version?
However, since there have been problems in the past with getting the PluginsStorage folder to the new versions, I store the data for my new plugins in a different location. Fortunately, this is now possible as getEntryWithUrl has been implemented.