Following my previous autoresponse, I finally found out that it prevented me from updating metadata.
When I initially modified my database, I actually ran another script that did DROP on the table, and then CREATE TABLE to recreate the table from scratch. There SSIS could not detect the changes, and I had to do all this in my other answer.
Later today I had to make minor changes, and this time I chose ALTER TABLE . Magically, this time SSIS found that all the changes even notified me about updating the columns from the advanced editor, which worked fine.
So basically all of these problems were caused by my poor knowledge of DBA and its best practices.
Ucodia
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