I seem to have found an anomaly in 2010 regarding the Import and Export. In the case of importing POI's from a .CSV or .TXT file and then open and look at the balloon just as can be seen in your samples, the second line after the title name is blank. When it matters is if you want to export this to a .GPX, the only thing that gets exported is the latitude, longitude and name. The rest of the information, Street, Affil, Location, Phone, etc... is dropped and not transferred to the .GPX file.

If on the other hand you enter a POI manually within S&T 2010 where most likely you'll type the Street address on the first line below the Name title and continue typing the remaining information on each subsequent line then do an export to .GPX the information is included in the .GPX file.

I'm not sure if this is just happening to me or what. I've reloaded S&T 2010 and still get the same thing. I am running Windows XP SP3, so maybe this has something to do with it.