Last modified: 2013-02-28 12:03:54 UTC
When proofreading, users are not able to undo their voting. They should be able to do so to correct possible mistakes.
I dont think the message review backend support this feature as of now.
Closing WONTFIX. This feature request does not fit our philosophy. If a user marked proofread incorrectly, updating the translation will invalidate acceptance for any previous versions of the translation.