SPIFrameSelectKTH - for proc id arrays select only trains contained in user's data.
Initially it was assumed that "KTH"-type users data contains 1-to-1 all trains from proc. It is not always so. In case whole trains from proc are missing in user's data - with this MR we ignore them. No reduction will be performed for such trains (as agreed with user's) and they will be copied to red as whole.