Old question, new answer!
I do a lot of relo deals. The relo companies pay full freight on commission in my market, because the relo company gets a big referral fee out of the listing side. What you were referring to was an exclusion to the listing agreement to keep one specific named buyer from the listing contract. So if that buyer had a signed contract in the first 2-4 weeks, the listing office gets nothing. Relo Co doesn't want agents new to handling the paperwork and managing the files. Talk to your relo coordinator.