There is no method for editing multiple profiles at a time, however there are other methods to get commands from one profile into another:
If multiple profiles share an identical subset of commands, you can have those in a separate profile, and include them into the others.
This way, if you edit the shared profile, those changes will apply to all profiles that include it.
To include another profile into the currently active profile, click
, click the "Options" button next to the profile name field, on the "General" tab click the "..." button next to "Include commands from other profiles :", click the "+" button, select the profile you want to include, click "OK", click "OK", click "OK", click "Apply" or "Done" to save.
If, on the other hand, you're copying commands to another profile because you're editing them to be unique to the target profile, you can either use the "Copy To..." entry in the command list's context menu (right-click a command in the "Edit a Profile" window) to copy over a single command to any profile, or you can use the profile exporting function to export certain commands (or the entire profile, if you prefer), then import those into the target profile using the "Import Commands" button at the bottom of the "Edit a Profile" window (at which point you can also choose to only import certain commands).