No, not that I know of.
You will notice there are no settings for the leader line lengths, only the starting angle.
So only that angle will be saved when you pick up settings (pipette) or save the label as a favourite.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10