Hello Frank,
You are connected and part of the Geni World Tree of over 142 Million connected profiles. Gedcom import is a one time thing. You could import another gedcom but would have to still merge and cleanup the existing profile on Geni World Tree. Duplicate profiles are resolved by merging them together into one profile.
"I would like to delete my outdated GEDCOM. Many errors and duplications. Then re-load a newer and better version. Can I do this?"
That was my fist question. Let me restate. I have several GEDCOMs or trees. They were created over the last decade. I have a big, new one in MH now that I ant to keep. Can I throw the Old Outdated ones away?
Looks like you have no other Geni users within your family group, so it might be possible to find a point where we can cut so that you can delete your current tree by closing your account and select that your tree should be deleted without deleting profiles added by others. Alternatively you have the option to delete your family group automatically when closing your account.