I did an amended return of someone who had done and efiled the original tax through H&R Block.  I replicated their work and then opened the amended federal and state returns, made my changes and am ready to efile the amended returns.  The option to efile the amended return in the efile menu is grayed out even after checking the File federal amended return electronically, check if original federal return was successfully efile and file state amended returns electronically are all checked.  What am I missing