Copyright and Saving?

I submit photos to stock agencies and they do not want the copyright marked with the photographer’s name.  I’ve noticed for several versions of Photoshop that if I delete my copyright name from the File Info and Save, then close, it reappears when I reopen the file. It usually takes three tries of deleting, saving, closing and reopening for this to stick. Is there an easier way to remove the copyright the first time on Saving. I do not want to remove it from ALL my photos, just the ones I want. Any suggestions would be appreciated.