Hello @Kquinby
Thank you for reaching out on the community and telling us about your issue. I do apologize for the issue you're having. That is odd that you're not able to delete it. I'm wondering here what are the two securities that are causing the issue. Additionally have you tried adding a manual entry to remove the shares from that are trying to be added. That may work but will still leave the transactions in the register to cancel each other out.
Once you get the chance see if removing the shares helps with getting rid of the extra security. If not we'll see what we can try next to fix the issue.
Thanks,
Quicken Francisco