After Starting a merge operation, developers might use the automatic merging capabilities to resolve trivial, non‑conflicting differences. However, developers often must make some decisions about what needs to be merged and how it must be merged. You can use the following tools to help you decide and manually merge the non-trivial differences:
If a base‑aware comparison is being used, Rational Rhapsody DiffMerge has more information about the left and right units. It is likely that the developer might need to make fewer manual merges with a three‑unit (base‑aware) comparison than with a two‑unit comparison.