Trim activity and personal records

Hi,

I ran my longest run ever yesterday. However, it does not show up in my personal records or pending personal records. I suspect this is because I trimmed the activity to the exact distance. I have to do this because the 245 insists on continuing to record an activity after I've completed my custom workout.

Can anyone confirm this is the expected behavior? Does trimming an activity make in ineligible for personal records?

Thanks