This is how to run the FileSaveAs command in VBA macro which is commonly used in Ms Excel or Ms Project without having the application prompt for overwriting and existing file.
This is how you can save as a new file with a different file extension but the you would like to use back the same file name as the current file you are saving from. This is a VBA macro code for Ms Excel, Ms Project or any other Ms Office product that uses VBA macro for automation.
Non Macro Solution Select the first cell that have the content that need to be paste to the empty cells. Scroll down to the last empty cells below the first cell that needed to be fill. Hold shift and select the last cell. Ctrl + D Macro Solution