[Gretl-users] appending (or joining) a plain time series into a panel

Hi everybody, I know this has been discussed before, but I'm confused about the status quo. I have a panel dataset with time dimension (years) from 1993 through 2018. Then I have a time series file (gretl format) ranging from 1991-2019, so slightly longer on both ends. I have tried in vain using the "join" dialog to add that time series into the panel, matching by the explicit "year" denomination, or "$obsmajor" or whatever. (This is the release candidate.) Now I actually know how to solve this, as described in the cheatsheet section of the guide: Shorten the time series manually to match the panel T length. But I'd like to know if there's anything I'm missing to do it more elegantly (in the future). thanks sven