CS3 P2 Export & Avid?

[Lumiere]

I have finished my project on cs3.My project is 720/25p.I had it p2 export and bring it to one of my friends post company.He opned in avid media composer but it seems 720/50P project.We see the screen grabs,but avid didn't like the P2 file at all.I wondered if anybody have idea about this workflow or tried it before.My aim is;when i finished my prject i want to have the minimum generation lost on digibeta for broadcast.Thats why i bring it to mediacomposer which is connected to a digibeta recorder?

 

[Lumiere]

Thanks Danny;
I am on Pc,and did't made any color on AE,ofcourse transitions done by cs3,but if,will it be problem?Uncompressed Tiff or TGA is sounds cool but for lond duration project like 60minutes you need a space like a hell,but its a good deal...Will it make a difference between uncomp.Tiff and uncomp TGA...
Today i tired another way but it didn't worked.From my hvx's component out i go through in directlly to digibeta,i played the video from FS-100 i can see the video on my camera lcd but not on the digibeta monitor.Strangelly digibeta accept the component signal,''it locks'' but we couldn't see the footage,so couldn't record.
As you said,i think exporting uncomp TGA file and bringing it to avid will be the short and lossless way...