hi,
explained the way you have explained, i am having trouble grasping the
logic. perhaps hiding one column might be a work around as a pseudo overlay???
Post back with more detail.
Regards
FSt1

"Roger" wrote:

Is there a way to overlay data in one column to another without replacing
data in original column? I have 10 sets of 1500 rows that I need to overlay
but not replace any data in either column (if that makes sense).