Reusing of class operations in other elements/diag

[def]

Hi all,

I'm having problem with reusing of class operations (and table columns) in different diagrams, but maybe I just misunderstand something.. here is a description:

I have a class with operations and empty interface. I want my interface to realize some of class methods.. I drag them from class operations into interface and thats it... BUT, if I change description, name, etc of operations, change doesn't reflect into interface operation.

Same problem with tables and reports. I have a table with columns in data diagram. Then I have another diagram, which includes reports (table stereotype).. in report I want to see specific set of table columns (ev from many tables).. I drag and drop them in the same way as for class operations... but when I change name or type of column in the "mother" table, it doesn't change its name/type in report.

How can I achieve that linkage, so when I change attributes of operation/column in parent element, it will reflect changes to that same operation in other element?  

Thank you, Daniel