A grain profile is a set of parameters that describes grain appearance. Once you create a grain profile through the Add Grain or Remove Grain tool, you can save it and reload it for use in other compositions. If one or more of the grain parameters are animated, only the parameters at the current time are saved in a grain profile.
When saving or loading a grain profile using the Remove Grain tool, the number of forward and backward motion vectors and the state of the automatic motion vector computation are saved. The Add Grain tool does not use these values when you load a grain profile, but does put in some reasonable values when you save a grain profile.
