I have a couple delimited files (not CSV) and I ended up aggregating them together and turning it into an xlsx file with formulas to collect statistics on the data. What I am wondering is if its possible to either write a macro or do something else to keep the spreadsheet and the other delimited files synched (xlsx does not have to be synched with files but files should be synched with xlsx). For instance, if I were to change a value in the xlsx file, I would want the corresponding value in the delimited file to change as well. I have not done much with macros and did not know if this would be an easy thing to do or not. Or maybe there is a way to do this without macros? I do know programming, just have not done much with macros.