Export to ProTools

OMFs have a maximum file size. I regularly have to export between DAWs, ProTools included, and while the OMF route sounds nice it's usually more trouble than it's worth. Just export stems. Have a talk with the mixing engineer of the studio and ask which tracks he'd like bussed and which separate and which fx to leave on etc.

Just in case all the exporting options have fail...Bounce All the tracks manually and then Drag them out in to a folder... make sure each audio track its rendered in one Clip (1 wave file per track)... From 1:00:000 to the end...(including silences)
remember PT will have no idea how to place disperse clips from other software... so 1 wave fiel per track its the safest way to go
 
This is kind of monumental task but will work for sure...
 
 Note:
Remember to apply any FXs to the clips Before take them to PT,. But i strongly suggest to take  with you RAW audio tracks, with no Fxs as possible
Hope this Helps:)

joey90405
what is a "stem"

It's essentially a term used to describe a sub grouping of tracks. Like if you have 2 guitar performances with 3 tracks each (for microphones, effects, whatever) you might/would send them to a "bus" to mix them all together before they go to your Master bus/outputs.
 
If you exported the audio of JUST that bus then you would have created a "Bus Stem Export/File". So the grouping of the tracks is (AFAIK) the "stem" whether you use busses or export them or whatever. It's just a vagueish concept to describe the grouping of those tracks.
 
A common procedure when sending files to other studios is instead of sending every single track in the project you would send them "stems" of all the multi mic'd tracks, effects send tracks, etc so the recipient just receives the entire sound in one file they can mix from there.
 
So a standard "Stem Export" would be an export of a bus receiving all your rhythm guit tracks thus creating one file out of multiple tracks, another for lead guits, another for lead vocals, another for bass, another for drums, etc.
 
This makes things easier/more manageable for the recipient in certain cases.
 
However... yeah, it just means a bunch of track outputs grouped together in whatever way is required.
 
The Master/Main outputs are not considered "stems" really because it's the full mix of everything. Every other grouping could be considered a stem.
 
Hopefully that makes sense.
 
Cheers.

Tell the artist to find a real studio and professional engineer that use Sonar. 
 
 

Also if you want to transfer tempo and markers you could save the project as midi and import it into PT. Then import the audio files. If you are using virtual instrument that exist both in Sonar and PT you could possibly save settings in it on the Sonar side and load the same in it on the PT side. It is hard to work with the same project in two systems unless you commit the track canges in each system and only move rendered audio files between them.