Disappearing Units on Transport TF's

[AirGriff]

I have had about a half dozen units disappear from their ships on 2 or more transport TF's. I'm playing a pbem, Dababes A, stock map,game version 1.7.1123x6-May 3, 2014. Circumstances as follows: I had around 6 units in a transport TF loaded at Fusan headed for Kwajelein Is. As they approached Kwaj., I broke the TF up into 2 transport TF's, each heading to different islands with level 1 ports. We're doing 2 day turns, so when I opened the orders I saw the TF's had transformed into cargo TF's, which are currently unloading supplies. The LCU's are nowhere to be seen. I strongly suspect this may have happened before, but at the time I chalked it up to inattention and losing track of a TF. Any ideas on what happened and how it can be prevented?

[michaelm75au]

Do you have the replay before the units disappeared, still on the TF?

[AirGriff]

I might have a replay saved from a turn or two ago.

[michaelm75au]

The one where they started on TFs and then ended up going away is best