I was playing with Oracle's EBR feature using Oracle 11.2.x. I added a new dummy column in a table using the "ALTER TABLE table_name ADD (column_name, dataType)" SQL statement. I also made the necessary required changes in the editioning view - namely adding the above mentioned column in the editioning view.
While testing, what I discovered was, the newly added column was always showing up in the first position (ie, column number is one) in the new editioning view. I am not sure if this is the expected behaviour in EBR. If you notice, the "ALTER TABLE table_name ADD (column_name, dataType)" SQL statement, would always add the new column as the last column in the table. I expected a similar thing in the new editioning view.
If I know the answer, will update this post!