Comparison Types
You can run an analysis:
• standard (selected by default)
It is a complete comparison of the two environments.
• by topic
If you do not wish to carry out standard analysis due to lack of time, or if you need to compare a certain object type only.
Standard analysis
Both environments must be compiled in the same language. 
Standard analysis is an extremely long process: it takes 8 - 12 hours.
Standard Analysis consists of comparing:
• Metamodel:
The metamodel analysis phase spots metamodel changes. If these changes are significant and concern addition of a language or modification of MEGA "core" data, comparison will not continue.
• Technical data:
The technical data analysis phase detects all customizations of the system repository, excepting the metamodel.
This analysis produces:
• a report file (XML report)
• an update command file (Upgrade MGR file)
This command file applied to the source environment allows us to obtain the target environment.
Analysis by topic
You can carry out comparison by topic:
• Metamodel to compare MEGA core metamodel elements:
• MetaClasses
• MetaAssociations
• MetaAttributes
• Diagram settings to compare all diagram configuration elements.
Example: DIAGRAMTYPEFIELD, MODELTYPELINK, DIAGRAMTYPEPARAM.
• Report templates (MS Word) to compare Report Templates (MS Word).
This option does not cover comparison of report template (MS Word) descriptors and queries.
• Descriptors to compare descriptors.
• Queriesto compare queries.
• Web supplies to compare the main components of Web sites: Site Web template.
Web site descriptors and queries are not analyzed.
• MOKA supplies to compare the main components of MOKA supplies:
• Project type
• Phase
• System diagram
• Deliverable
• Project context
• Generators to compare the main components of generators:
• Generator
• Generation rule
• Generation kinematics
Generator descriptors and queries are not analyzed.
This comparison produces a report covering only the differences detected (XML report).