Some clips are 16 bit and some 24 bit?

Im using sonar platinum up to date. I'm having trouble opening new .cwb files and read of an issue with mixing 16 bit and 24 bit in a single project giving .cwb an issue opening. To look into that, I opened some of the individual clips in sound forge to see what bit they are, and some are 16 bit and some 24 bit. They have not been bounced out or exported yet, just in a project work file. I am using some midi that then becomes audio in the project file, and the odd thing is that I played bass and guitar both in the same Tascam 2 x 2 input into the project, and one clip says it is 16 bit and the other 24. My vocals from the Tascam are also 24 bit, while some keyboard tracks from the Tascam are 16 bit. I have the project set from the beginning at 24 bit. I don't know where to start to understand how this is happening and how to prevent it? Settings on the Tascam control panel don't have a bit selection, and the book says its 24 bit. So, if the interface is 24 and the project is set to 24 how is this happening? Thanks, treesha

Thanks, it goes like this, click to open song.cwb, which I have a few versions of in a few on and off laptop locations, unpack bundle box, uncheck the 2 boxes for store project audio in its own folder and create one file per clip. Sonar Platinum box appears "Unexpected Error Code hr:2359296261, File: HRESULT: 3221225747" . I since learned that if I leave those boxes checked, the file will open. I don't quite get how to do the per project audio folders yet as Ive used sonar versions this way for many years, and even since getting platinum, and never had a .cwb not open. Probably did 6 songs since getting platinum and all were similarly a mix of elements and had no problems until the last 2.
Second, I looked at the locations you mentioned and found that the record depth was 24 but the rendering was set at 16. So bouncing and effects were at 16, so that mystery solved. Thank you. Help says "The default value of 32 allows virtually lossless processing." So should this be 32 and not 24? Are there any issues with the effects etc that come with platinum needing 16 or 24 ?
thanks, treesha
 

I'm to understand that all processing/ rendering in Sonar should be 32.  
Only on export do I change to 16 for CD's. Everything should be rendered at 32. 
And you should be fine from now on if you set both places shown by scook to 24. 
You should see what happens if you start using CWP files. Bundle files are a left over for the past and not many bother with them anymore. 

Thanks scook and cactus music, I have been experimenting with the per project way of saving files, and will change the render setting on when I start my next project. I do like having the audio for the project easy to recognize, rather than all jumbled up with other songs in the global folder, and have seen melodyne and mix scene folders popping in and didn't get where they were coming from. treesha