Account - expansion lock

[kadeshar]

When we reduce patch to for example Patch = 0 and then we create account this account available expansion is vanilla. After changing patch on TBC or Wotlk that dont change. That locks races, classes and zones (and i dont know what more) introduced in new expansion.

Suggestion is to make into consideration table acore_auth.account in progression scripts

Workaround:
patch 0
UPDATE acore_auth.account SET expansion = 0;

patch 12
UPDATE acore_auth.account SET expansion = 1;

patch 17
UPDATE acore_auth.account SET expansion = 2;