The Cycle 3 Call for Proposals includes the following instructions for PI's of previously successfully proposals that were not completed by the Cycle 3 proposal deadline:

"Information for Proposers with undelivered data

Proposers of active Cycle 1 and Cycle 2 B- or C-graded projects should consider that these projects may not be completed before the end of Cycle 2. If they wish to observe the same targets in Cycle 3 they must specify whether or not the Cycle 3 observations will duplicate the former ones. If so, the proposers must specify if the duplicating observations need to be repeated in Cycle 3 even if they have been successfully completed by the end of Cycle 2. Such repetition, if deemed necessary, must be scientifically justified."

Proposers may check the observational status of their Cycle 1 and 2 projects using the Project Tracker, available at the Science Portal, or contact their Contact Scientist. 

Note that Cycle 2 proposals that were awarded an A grade but which remain incomplete should not resubmit their proposals; these projects have a higher priority for scheduling for the remainder of Cycle 2, and will automatically transfer to Cycle 3 if they remain incomplete.