CreateUpdateDDLScript Only Generates CREATE script

[Jeff Reinhardt]

I am calling the CreateUpdateDDLScript method but EVERY time it returns CREATE TABLE instead of Update Table.  My model works, my data tables all have data. I made a change in the mapping for a table to add a column, change a column size, etc but it only gives me CREATE scripts. I end up having to make the DB changes by hand.  What am I missing?