I've given schedulers a simple Excel template to populate with data. I've created and saved a map of these fields using MS Project's Import Wizard--it's merge with a key on a unique ID of my choosing. When I perform the import (manually or with VBA) it:
1.) Does not "clear" fields; if the scheduler has removed the data (Vendor Name) from a field associated with unique ID "12345", on import, "Widgets, Inc." remains in the MS project field though the field is blank in the Excel file.
2.) One MS Project field is based on a look up table with a set of names. "John Smith" and "Jane Doe" are in the list, and if the user changes the excel data (associated with 12345) from John Smith to Jane Doe, the update happens; however, if the user changes the excel data from John Smith to "jdoe" it does not update--which is good, except I want to be prompted that certain data did not get pushed.
Ultimately, I want to call this import function via VBA (maybe through Excel or Access or MS Project) so I can just click a button rather than import each schedule update one at a time with the Import Wizard. That said, I need to know when Project is accepting the data and when it's not.