I have been maintaining a public arcgisonline map that populates from a google sheets csv. I tried altering two columns on the csv source file (the positions of the rest of the columns remained unaltered) and then the map became completely empty. I restored the csv file but everything is still empty. Do I have to rebuild the whole map from scratch? The csv shows up on the webmap but there is no way i can find to reintegrate the data into the map.