[xwiki-devs] dates for revisions was updated to the date of updates

Hi! I have next issue: After xwiki update from 3.2 to 4.5 all dates for revisions was updated to the date of updates. How can i fix it? I see only one way to change it in the DB: update xwikircs set xwr_date= FROM_UNIXTIME(CONVERT(substr(xwr_patch,locate('<date>', xwr_patch)+6,13),UNSIGNED INTEGER)/1000) commit is it correct? will it have impact on other objects ( keys, indexes)? mayby someone has other ideas how to fix it ..