don't resent layer name on merge if no merging actually occurred
don't resent layer name on merge if no merging actually occurred

seanisom/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,markraz/vtp,markraz/vtp,markraz/vtp,markraz/vtp,seanisom/vtp