Apple Logic Pro X - Manual (Page 313)

Chapter 10 Create a song arrangement 313
Convert aliases from deleted source regions
If you delete a source region that one or more aliases was derived from, Logic Pro asks if you
want to convert the aliases to independent MIDI regions, or keep the aliases. Do one of the
following:
m To cancel the procedure: Click Cancel.
m To change all alias MIDI regions into real copies: Click Convert.
m To delete the parent region, and retain all (orphaned) alias regions: Click Keep. Although such
orphan aliases serve no useful purpose, Logic Pro doesn’t automatically delete them, in case you
decide to reassign them to new originals at a later stage.
Select and delete all orphan aliases
If your project file contains unneeded aliases, you can quickly tidy up by selecting and deleting
all orphan aliases.
m Choose Functions > Region Alias > Select Orphan Aliases (or use the corresponding key
command).
m Choose Functions > Region Alias > Delete Orphan Aliases (or use the corresponding key
command).
Convert an alias to a normal region
You can create a real region from an alias; its contents are identical to those of the original
region referenced by the alias, but its playback parameters are those of the alias. After it’s been
converted to a real region, you can edit it (or the original parent region), without affecting the
new real region.
You can also double-click an alias to open a dialog that asks whether you want to create and edit
a real copy, or edit the original.
If you double-click an alias to edit it, Logic Pro assumes that you either want to edit the original,
or turn the alias into a real region. You are asked whether you want to create and edit a real copy,
or to edit the original.
m Choose Functions > Region Alias > Convert to Region Copy from the Tracks area menu bar (or
use the Convert Alias to a Region Copy key command)