You should do a current backup of your GL data then delete all your GL data files before doing the restore. You then can unzip the GL files from the zip file you wish to restore. Depending on why you need to "go back" you might be better of restoring the data to a different folder. There is no way for anyone to be able to say it is "OK" without discussing what has been done since the closing and what it is that you are trying to accomplish. I suggest you contact your Adagio partner for support on this issue.