Open databases (see Project changes summary use case) and 1click on Table definitions:
to open Object list tab with tables. Note that rows highlight here is related only to column definition changes (column names, types, etc) and not related to data changes. Then 2click 'Compare data' for the required table:
to open Data diff tab with result. Here you can 3apply filter to show only changed and/or new rows:
To merge data changes to the other side you need to 4select required rows, if needed 5select required columns and 6click Merge: