Sync'd on IOS and lost all my changes

Hi! I love using Scrivener and have moved to using it on both my laptop and iPad. Over the last couple of days, I’ve done some work on my iPad while I had no internet and today I’ve sync’d it to upload the changes to the dropbox and across to my laptop. Instead, it’s deleted all of the changes I’d made and sync’d the old version down from the dropbox. Has my work gone for good? Or is there a way of recovering it? Really hope someone can help! Thanks.