DR17.3.2 Incorrectly rendering interlaced GFX with Alpha

So, I'm originating footage from after effects.
It is 108050i QT Animation codec - Premultiplied Alpha.

I bring it into resolve and it's rendering like this - both for preview and output.

https://ibb.co/m4qM18V

The only colour that should be there is the brown X - The shadow or ghosting is being created by resolve.

I've tried 5 other different codecs, nothing has proven to work correctly.

All of my test renders display correctly in Premiere on playout to an interlaced test monitor.

I've tried rendering a progressive version and it's fine (obviously not fine for my delivery which requires interlacing)

It seems like Resolve just really doesn't like interlacing.

Anyone else run into this ?

DR17.3.2 Studio.

Have you told resolve that this is an interlaced clip?
In the Media pool (or timeline ) select the clip and choose Clip Attributes.
There should be a setting to specify that this is interlaced and resolve should treat it as such. Usually you would stop seeing the interlace lines in the viewer.

Have you told resolve that this is an interlaced clip?
In the Media pool (or timeline ) select the clip and choose Clip Attributes.
There should be a setting to specify that this is interlaced and resolve should treat it as such. Usually you would stop seeing the interlace lines in the viewer.

yup. done all that. confirmed that the alpha interpretation is premult.

It understands the alpha channel UNTIL its an interlaced file. Then it falls apart.