Can see OS X Numbers sheet on iOS, but won't open
I can see a copy of my Yosemite OS X Numbers-created spreadsheet saved to iCloud on my iPad Mini 2 running 8.1, but it appears "grayed out" as compared to other visible sheets/files. The others open in iOS, but the greyed out one won't. It will open on Mac Mini. Is there some sync trick that needs to be tried?
iPad Mini, iOS 8.1