Belts - moving/saving

Why can’t we move (save) belts?

It may seem trivial, given their low cost relative to other items, but other items (machines) can be moved (rather than deleting for a small refund, 50% of original costs I think?), why not belts?

Perhaps the complexity of belts (straight/corner/T/4-way) makes this more difficult, but in a really tight money game w/ a long line of belts I’d like to be able to move (save) some, rather than deleting them. A default of moving a belt leaves a ‘straight’ section maybe?