HI all,

The following are the list of versions that Atmel Studio 7 supports for importing Arduino sketches.

arduino-1.5.6-r2
arduino-1.5.8
arduino-1.6.0
arduino-1.6.1
arduino-1.6.4
arduino-1.6.5-r2
arduino-1.7.3
arduino-1.7.4
arduino-1.7.5
arduino-1.7.6