What's the server command to refresh/match blocks that are ? after an upgrade.

[Shaidyn]

Hey, folks I upgraded my server but I've got a bunch of ? blocks from a mod (bricklayers). I upgraded the mod as well to the most recent. I vaguely recall a server command that remaps things, can anyone recall it? Thanks.

[Streetwind]

/fixmapping applyall

However, it might not help. It's a stock game command meant to deal with stock game issues - not with mod issues.