* Add 1 Part bb0012vac01 Red Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes with 4 Light Gray Train Rim for 4.5V & 12V Locomotive Wheels (bb0012va / trainrim) (match ID 1)
* Add 2 Part bb0012v2ac01 Red Train Wheel Middle for 12V Motor with Light Gray Train Rim (bb0012v2 / trainrim) (match ID 1)
* Change 2 Part Red bb0012v2 Train Wheel, Middle Wheel for 12V Motor {Regular to Alternate} {match ID 0 to 1}
* Change 1 Part Red bb0012va Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes {Regular to Alternate} {match ID 0 to 1}
* Add 1 Part bb0012vac01 Red Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes with 4 Light Gray Train Rim for 4.5V & 12V Locomotive Wheels (bb0012va / trainrim) (match ID 1)
* Add 2 Part bb0012v2ac01 Red Train Wheel Middle for 12V Motor with Light Gray Train Rim (bb0012v2 / trainrim) (match ID 1)
* Change 2 Part Red bb0012v2 Train Wheel, Middle Wheel for 12V Motor {Regular to Alternate} {match ID 0 to 1}
* Change 1 Part Red bb0012va Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes {Regular to Alternate} {match ID 0 to 1}
* Add 1 Part bb0012vac01 Red Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes with 4 Light Gray Train Rim for 4.5V & 12V Locomotive Wheels (bb0012va / trainrim) (match ID 1)
* Add 2 Part bb0012v2ac01 Red Train Wheel Middle for 12V Motor with Light Gray Train Rim (bb0012v2 / trainrim) (match ID 1)
* Change 2 Part Red bb0012v2 Train Wheel, Middle Wheel for 12V Motor {Regular to Alternate} {match ID 0 to 1}
* Change 1 Part Red bb0012va Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes {Regular to Alternate} {match ID 0 to 1}
And then a few of those older posts show a set with
*
bb0012vac01 (Inv) Electric, Train Motor 12V with Wheels Type I with 2 Round Contact Holes with 4 Light Gray Train Rim for 4.5V & 12V Locomotive Wheels (bb0012va / trainrim) Parts: Electric, Train {Red}
So because of that "in-between" set I fear we cannot use only one match ID number
for all alternates here. And with multiple numbers the inventory would become
quite complicated. I'm not sure it is worth the effort.