Plum,
KV is right. The 'kaatirundha malli malli' has traces of Amrithavarshini and other ragams. As he said raagas and me had discussed on this and came to the conclusion that it is a typical Raja raagam, which essentially means it is not a single ragam :) In that way SKV is right, 'Sreeramalera' is also a Raja raagam :) More seriously, no, there is no major relationship between Sreerama Lera and Kaatirundha malli song. As I had said earlier, Sreerama Lera has shades of Pantuvarali, Lalitha / Vasantha etc. A Raja raagam indeed, in every sense of the word.