In episode 266 of Semantic Mastery's weekly Hump Day Hangouts, one viewer asked if the team hs tried blasting GSA links to GMB cid and short URL.
The exact question was:
Hi Guys, love your Free Quality Content, Next Paid Plans! Got some Questions. 1 Ever tried sending a GSA Blast to a GMB CID/Short URL (Sorry, I'm like Marco, testing till it works).