# Copy & past of main track, bass and arpeggio leads to different length

**URL:** <https://forum.scalermusic.com/t/copy-past-of-main-track-bass-and-arpeggio-leads-to-different-length/21172>\
**Category:** Scaler 3 General Discussion\
**Tags:** LogicPro\
**Created:** [April 5, 2025, 12:06pm UTC](https://forum.scalermusic.com/t/copy-past-of-main-track-bass-and-arpeggio-leads-to-different-length/21172 "2025-04-05T12:06:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![TC242HH](https://yyz2.discourse-cdn.com/flex012/user_avatar/forum.scalermusic.com/tc242hh/32/12303_2.png) [@TC242HH](https://forum.scalermusic.com/u/TC242HH)\
**Post date:** [April 5, 2025, 12:06pm UTC](https://forum.scalermusic.com/t/copy-past-of-main-track-bass-and-arpeggio-leads-to-different-length/21172/1 "2025-04-05T12:06:33Z")

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When I copy main track, bass and arpeggio it leads to different length  
In Logic Pro. I did not get why?

Furthermore, as a rookie in scaler, I haven’t found out, how to send out the midi data thologic direct to my external synth… haven’t had such issues before ☹