i couldn´t find something useful, therefore i am asking you to help.
I have a spreadsheet with 1000 rows (=locations) and 300 columns (=Milestones with plan & actual dates). These entries should be archived every month for the next 4 years so i can create a trend line for every milestone and location. It means approx. 14-15 Millions cells.
Can anybody help me to automate this task? Basic structure that came to my mind ist to create a new file with 300.000 rows with specific ID (="Milestone name" & "Location") and 96 columns (months for 4 years for both dates(plan & actual). Then automatically (with vlookup?) store the dates from the master file on monthly basis to to the corresponding cells.
Thank you in advance!