Ok, theres probably an easier way, but heres what i would do.
Lets say you have scene. And in your scene you want to import FROM, you have multiple objects.
1) Go to the scene you wish to improt FROM. Delete everything you wish NOT to import. save it as a different file.
important: Save as a DIFFERENT file or else you'll lose everything youve done so far.
2) Go to you new scene. Go file > Import > and select the NEW scene you just saved,
voila! You now have your old object along with its keyframes in your new sceen.
those who succeed are only the failures that never gave up.