If you want a workaround try leaving the timeline native,which would mean leave the timeline 1920×1080 60i (or 1440×1080) 60i. This would be native to your source video. Do not deinterlace. Create a file 1920x 1080 60i upper field as your final product. This will not create motion artifacts.This is still your native resolution. This matches your original footage. If you play this master back on your computer using VLC Player it will look interlaced however then turn the deinterlacing on in the VLC player and watch it again. See if you are getting the desired result. If you do get the proper look your next step would be to use adaptive deinterlacing on your interlaced master to create your progressive master.You don’t want to deinterlace the hole picture just the action.Autodesk Cleaner, or Virtual Dub (free) will do this for you nicely. Now you have a 1920×1080 29 Progressive master which will convert very nicely to a DVD,progressive or interlaced. Without deinterlacing the whole picture instead of just what you need.