How come the sequencer deletes my character's animation?

As stated above when I use my unreal live link to record my characters in the sequencer everything comes out fine the first time around, however when I reopen the file later after saving and closing the sequencer im the previous session at least one or two of my characters have “no animation” on the animation track. I can’t figure out why it is doing this. Is there an alternative suggestion or fix for this? Thank you

I have figured out the reason why the sequencer was deleting the motion files and will no longer require assistance.