cauda / PIE root *keh₂u-
The point is still that you didn't list any descendants, even though WT:AINE says they must be provided. I would have simply moved the entry if there had been descendants present. Instead of arguing with me, why don't you go an add some to the entry?
Because it's past 2:30AM here and I'm about to go to bed. Again, I've tried to add descendants, but since I'm not familiar with the templates, it's not something I can do in just a few minutes. Anyway, I've saved my work to a TXT file and I'll get back to this another time.
I looked in De Vaan 2008, he lists no derivations from this root other than cauda itself. A single term is not enough to base a PIE root on.
You can also build your new entry and experiment with the templates in a user page (sandbox) of yours, and then copy to main space when you get confident enough.