>>149029432
It's not really elaborated on or anything, and he's not really used in any fiction to show it off.
Around this time the toy bios were doing surprisingly deep lore, like the TM2 Prowl bio saying he thinks he's the reincarnation of an Autobot strategist(implied the G1 Prowl), Cybershark's bio talking about him fighting the Seacons from BW2, and Magmatron's bio straight up referring to him as the one from BWNeo, having returned to Cybertron.