With the great power and flexibility that the Update from database wizard provides it is very easy to break one's model. In order to reduce the chance of breaking the model, we have implemented some limitations. Obviously removing whole tables, and the persistent types mapped to them could be dangerous and could lead to accidental damage in one's model.
This is why currently remove operations for tables are not shown in the Update from database wizard.
You can remove a table from your model by performing the following steps:
1. remove the mapping for the table / delete the associated persistent type
2. remove the table from the model using the "Remove table" command from the context menu in the Model Schema Explorer
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