Quite a few tanks that were in the old imperial guard codex, did not make it into the newer codex . They then re-appeared in things like imperial armour and the armoured company chapter approved list .

Has GW said anywhere IN PRINT that it is still ok to use the older tanks in normal imperial guard armies, as i know they were mainly removed due to space issues[in the codex and in the stores ]. Failing that what are peoples experiences in tournaments and general play with rules lawyering on such matters?