Edit from LR3.3 to CS5 no longer offer choices?

Question

It used to be the case that I would right click on a raw file in LR3 and it would ask me to edit a virtual copy or the original raw file in CS5. For some reason it no longer asks me for this. Also, when the raw file is brought into CS5, it simply opens the file directly and does not invoke Camera Raw menu where I could tinker with the photo first, before fully bringing it into CS5. Lastly, I see from the CS5 tab that the photo is in raw format with an asterix "*" yet when I click on save to bring the changes back to LR3, it creates a TIFF.
Q: If we are working off RAW in LR3 and CS5, does CS5 not save the changes back into the XMP file? why create a TIFF file instead? Why does it not maintain everything in RAW?
Q: What happened to the Camera Raw menu and why do I no longer see it?
Q: Why does LR3 no longer offer me a choice of virtual copy, original, or photo with the changes?

Answer 1

Raw files are proprietary formats, and PS can not write them.  So there is no way for a file edited in PS to be saved back as a raw, not to mention the fact that if you did that, you would destroy your original.  That is against LRs definition of never making destructive edits.
Writing some changes back into an xmp file make sense, but obviously most of what PS does can not be done that way.  Saving it as a tif (or some other format, your choice) is the only way to save your edited image.
LR already does everything ACR did, so I believe they integrated it so as to remove the redundant interface.  After all, the general idea is to do as much in LR as you can, swtich to PS for bit editing and completion.
Cheers!