I have returned with an answer, much to your dismay I suspect.
The Halloween Operation event "Saving Transylvania" takes place using Tier 3 ships. The missions for both recurring daily and German BC line require the use of Tier 5 or higher ships to complete. Thus, Saving Transylvania will not count towards these missions.
This was understood when released, but we've talked and agreed that we could have made it more clear. Even I didn't notice that the ships were T3 and that's what keep the missions from progressing. Good news is that all the other operations that contain T5's or higher WILL count.