re ‧ plat ‧ form /ˌriːˈplætfɔːm $ -fɔːrm/ BrE AmE verb British English
be replatformed if a train is replatformed, passengers have to get on it in a different part of the station from the one they were originally told to go to:
The replatformed 19:47 to Leeds will now leave from platform six.