An easier way top do this is from the arpeggiator. There are two symbols next to the play button in the top left. While the long notes are playing you can drag and drop from the bottom one. :)

Just in case anyone tries this and doesn't see the 'IAC Driver Bus 1' in the External Instruments drop-down: open the Audio MIDI Setup utility in your Mac's Utilities folder (or command-space to Spotlight search for it), open the MIDI Studio window if it isn't open already (in the Window menu item), double-click on IAC Driver and check on the box next to 'Device is online'. There's a chance it's not on by default. I just found this out trying out this Arp to MIDI tip.

You could also create an Alias (in the Functions-Menu) of the recorded Midi-Instrument-Region and drag it to the external track. So Logic will record over that Alias and replace it. You don't have to manually delete the long notes by this way:)

thank you this works great. could never get the "Record midi to track to work" on the arp

This is incredibly useful! Thanks

Fantastic. That was exactly what I have been looking for for years :)

This is very helpful. Thanks!

Very nice, thanks for posting this.

Great tip!

This was amazing❤️

cool 👌

It's even easier if you set the output of the original track to IAC bus, and just set a new track to record with the sound you want. No need to edit or delete any notes in the new track. And you don't need to copy the arpeggiator to the new track. Cheers

At external instrument, I don't have IAC driver showing any idea?

Mind. Blown.Thanks! Seriously how do you know about all these tricks?!

Could I have one track that has midi play another track? In something like Ableton or Bitwig, the MIDI tracks have inputs and outputs, so sending one midi to another channel is easy. I'm new to Logic and would like to know if it has something similar.

Dope Thanx Seids 🤗

How do you copy and paste a midi fx plug in?