Aspose::Words::Lowcode::MailMergeOptions::set_MergeDuplicateRegions method. Sets a value indicating whether all of the document Mail Merge regions with the name of a data source should be Merged while executing of a Mail Merge with regions against the data source or just the first one in C++....Aspose::Words::LowCode::MailMergeOptions::set_MergeDuplicateRegion...whether all of the document mail merge regions with the name of...