I think part 32289a needs to be renamed and have a tilde added.
The corresponding top part 32288 is using a tilde.
parts/32289a.dat - Electric Technic Motor 4.5V 6 x 17 x 5 Base Type 1
parts/32288.dat - ~Electric Technic Motor 4.5V 6 x 17 x 5 Top
The corresponding top part 32288 is using a tilde.
parts/32289a.dat - Electric Technic Motor 4.5V 6 x 17 x 5 Base Type 1
parts/32288.dat - ~Electric Technic Motor 4.5V 6 x 17 x 5 Top