How to modify existing layouts?

I'm making my first modifications to layouts that were built by consultants in 2007. I need to move a key figure from one layout to another within the same planning area. I attempted this change in our sandbox environment, and I was able to move the key figure and update the fox calculations, but I lost all of the formatting on the layout - column widths, hidden columns, etc. I've compared visually everything in Sandbox to Development and I can't find how this was done. Any advice on where to look or documentation that might apply?

Thank you in advance for any assistance.