I am creating a offline basemap using the ExportTileCacheTask and when I load that basemap it locks the maximum extent of the mapview to the size of the created basemap. However my problem is when I switch to map from the arcgis portal that covers the whole earth the highest I can zoom out is stuck to what was set to when it loaded in the *.vtpk file. I have tried to browse around for some properties to adjust this but haven't had any luck yet.
Thanks,
Aaron