Sequencer CR curve evaluating differently when navigating from parent sequence

Depending on whether I first open the level sequence that contains the control rig, or its parent level sequence, the animation curve will evaluate differently. 

1. Open (the parent) `/Game/<redacted>/Chars/<redacted>/Animations/Anim/Silverbell_Walk/LS_<redacted>_Walk_Anim_Review`
2. Navigate into the subsequence
3. Select `BR_FootIK` (the blue box by his back foot)
4. Observe the anim curve `Location.X` has many keys, and ranges from 6-35 in the curve editor
5. Observe the anim details pane does not reflect the value shown in the curve editor or sequence outliner
6. Nudge one of the keys on this curve - notice that the viewport and anim details now represent what this curve is outputting

Restart Unreal - don't save anything

1. Open (the child) `/Game/Dasher/Chars/<redacted>/Animations/Anim/<redacted>Walk/Takes/LS<redacted>_Walk_Anim-01`
2. Select `BR_FootIK` (the blue box by his back foot)
3. Observe the anim curve `Location.X` now only has 2 keys