5D MKII SRAW1 files are not fully editable ?

Canon 5D MKII
The standard Raw files are fully editable, BUT the 'SRAW1' files are not.
The SRAW1 file does not seem to support the Lens correction facilities ?
So no vignetting etc.

Will you be amending this Phaseone ?

Thanks
Simon

PS. Still need shink below 'FIT' size when viewing images as need to show images smaller with space round then like in Capt 3.