How can I swing a melodic line in Logic with expected durations?

Logic 10.7.9 / Macbook Air M2 / Ventura 13.5.2

I'm trying to quantize a melodic line in Logic to swinging eighths but the note durations are surprisingly problematic. 

Here’s my workflow:

• Enter a melodic line in MuseScore (a free notation desktop app)

• Export the melody from MuseScore to MIDI (straight eighth notes, no swing)

• Import the MIDI track to Logic

• Select all notes on the track

Then in the piano roll editor:

• Set swing type to “1/8 note (classic)”

• Set the swing level to 60 for a light swing

Result (as expected):

• note onsets remain unchanged on the beats

• note onsets of notes falling on the “ands” shift to the right. Therefore I hear the swing But ...

Unexpected results (due to the way Logic swing setting shifts note heads and note tails):

• playback is choppy where Logic swing function creates gaps between notes

• playback is overly legato where Logic overlaps notes (the tail of the swung note overlapping the on set of the note on the next beat.)

The big surprises are:

1) Logic does not extend the durations of each “on the beat” note to the onset of the subsequent swung note. (Every notation app I’ve used does that, including MuseScore.)

2) Logic repositions the entire swung note, moving its onset (desired) AND also moving its tail by an equal amount (NOT desired.)

What am I missing here? There must be a way to achieve better behaved melodic swing.

If I was simply trying to swing quantize a drum track I wouldn't be posting—because with drum tracks the duration of the notes is inconsequential.