In my haste to copy & paste relatives here from my tree on Ancestry, I accidentally skipped a name. My grandmother Marie had parents named Arnold & Jennie. Arnold's parents are William & Rosanna. I accidentally made Rosanna Arnold's wife. So to fix that, I made Rosanna William's wife also, and then tried to remove her relationship to Arnold. But after I checked the box to remove that connection, I got a warning that I was about to split the tree and the box to "Remove" was greyed out. I tried clicking both "Save & Close" and "Save & Continue", but neither one made any change to the relationship. I'm using Chrome, not sure if that makes a difference to your site.
This is what I'm trying to copy...

Thanks in advance! --Jim