See below for a more complete step-by-step. After you make the copy of the style and change the Data Definition to your customized version, you need to manually edit the SQL statement the dataset inside the RDL uses. Then you’ll be able to add your textbox. The Sync Dataset button tries to do this automatically, but a lot of system reports don’t follow the RDD schema to the T, so Epicor ends up clobbering the RDL datasets.
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