> You are right with the outcome but wrong about why. `jj abandon -r q` would turn `r --> q --> p` into `r --> p`

Well, it can do two things. Given: `r(f3) --[e3]--> q(f2) --[e2]--> p(f1)`

`jj abandon -r q` makes `r(f1+e3) --[e3]--> p(f1)`, as if you had rebased `r` onto `p`.

`jj abandon -r q --restore-descendants` makes `r(f3) --[e2+e3]--> p(f1)`, as if you had squashed `r` into `q`.