I'm having two issues with PV360 for SW2012

1. - I open a new part, apply a material, change background to Plain White then render to a PNG.  The PNG also keeps the shadow on the floor which I do not want.  It looks like 'floor shadow' option cannot be turned off.  Is this true?

2 - In the same part if you zoom in, you can see that it is reflecting the 'Kitchen' background although it's never been chosen in this part.  What's up wit dat??  Can't figure out how it attached itself or how to get rid of it on new parts.

Anyone know what's going on here?