Universal Autofill and Mac encrypted disk images

Update:

So I put all the passwords from my 'high security' keychain into my 1Password as login items. Then I deleted my 'high security' keychain. This now sorta works for using universal autofill. Because I no longer have the password in my apple keychain app at all, I do not get the Mac window asking for my password to unlock the associated keychain. I was not ever able to get the universal autofill to recognize that window. Any attempt at autofill would try to fill whatever widow was open behind it. But now that widow does not appear and universal autofill does in fact recoginize the window to fill in the actual password for the encrypted disk image.

This is actually what I was after. I select 'Fill & Update Login' and it will indeed work as universal autofill now. But only for this exact disk image with this exact password. It will attempt to fill in the same password no matter what disk image I am trying to open. I suppose I could rebuild the disk images all with the same password because I do not think I am going to be able to get 1Password to be able to tell which image I have selected. Or alternately I guess I could just always have the password set to the current image that I am using the most and update it in the 1Password app when I am mostly using another image. Alternately I can at least now use Quick Access to select the password I am after. So much better, but not perfect.