miRack folder vanished

Absolutely loving learning miRack - had some great patches saved and yesterday I opened up miRack, saw it had the new update and then found that my miRack folder on my ipad had vanished with all my saved patches and files in it. Not in the bin, nowhere to be found. Also miRack no longer seems to want to save to an automatically recognised folder that comes up with the miRack logo on it. Has this happened to anyone else and have you had any luck finding the old folder?