This option lets you Bake (or Plot) Animation at export time.
This bakes all unsupported constraints, including Maya-supported and FBX constraints, into animation curves. You can then import these curves into another application that does not support these Maya constraints.
The plug-in takes the Start and Stop values automatically from the “timeline” current settings of the host application. You can modify them by changing the values once you activate this option. Manually changing these values overwrites the timeline values.
The Step value defines how many keys are created per frame, and has a value of 1 by default. Setting a Step value of 2 for example, only bakes and exports a key every other frame.
