Have tried all the advice with not much luck.
If you use: AVC INTRA/1080I/AVC-I 100 1080I50, images and animation is interlaced on export to progressive.
If you use a progressive workflow and interpret the files, motion is interlaced within Premiere Pro.
None of the solutions here seem to fix the issues altogether - needs to be an update so that Premiere Pro recognises the 50i wrapper as 25p without interlacing the footage in the timeline.