RE:RE:RE:What to do with $200M in cashYou vote)The key feature of a "revolving" line of credit (LOC) is that the full amount of the LOC limit is always available even if you've paid the balance down to zero.
So moving available cash into the LOC in the interim to save interest payments makes sense until it's actually needed to fund RP2 at which time as much as they need of the LOC can be mobilized.