The Help/About also says 8.0A as does the older backup of the data. The Check Box "Header Fields on Each Record" is supposed to be there in version 8.0A. It's no longer there for any of the import features in the A/R. The check box does exist on an older backup. I guess the best thing to do would be to back everything up and then re-install the A/R software again. I can't explain why it would disappear unless the those software files for import feature became corrupted in some way. I'll try a re-install and let you know the result.
Thanks for your help.