Sure you can.... when you import to CXN, it will read the data and start asking you questions. Which template to use, what phone switch to associate it to, etc. Connection does not care what server the data came from, it just matters how it imports it into its own setup. If you have not watched the super video on Ciscounitytools.com I highly recommend to do. Also, try a few imports, and go through testing to make sure the import goes the way you want it to. Its not a one shot deal, you can repeat the import over and over again.. it will allow overwrites,etc. (except with messages, it can be messy)
Enjoy!
http://www.ciscounitytools.com/Applications/General/COBRAS/COBRAS.html