IVTC with Cuts on Field Boundaries

[j7n]

I have an NTSC "mostly-Film" video that has been edited as video and cut at field boundaries, so that only one half of some frames directly at the cuts are available.

If I run TFM(pp=0).TDecimate() on this clip, the incomplete frames are almost always dropped, and decimation leaves behind duplicates of other frames.

Such as in this example, the first and last fields of the spinning mouse aren't included, and frames 13 and 14 of the children are the same.

One solution is to cut the video and process each shot manually, inserting a half resolution frame from a parallel bobbed clip. I have begun doing this, but it is a pain since each shot is on average 2 seconds. Is there any method to automate this?