Well sometimes when Disney loses a sponsor they would slowly take out all of the signage associated with that company. Cases that did not include this was when Santa Fe did not want to renew their sponsorship of the DLRR all signage was down the next day including the riveted one on the monorail. Now if they discluded sponsorship of Autopia Disney must really be occupied with DCA to remove a few signs.
Hope that helps.
See ya walkin' down the middle of Main Street USA.