Yes. A shared gearbox model designation does not freeze every component throughout production. Manufacturers may revise a clutch, separator plate, control assembly, seal or other service item without renaming the entire transmission. Vehicle-specific adaptations can also exist within one family.
Parts should be matched at the most precise available level: complete unit code, vehicle application, component OE/service number, production revision and applicable approved supersession. A useful first-party example is the SUPER5 Aisin identification guide, which discusses why the UA80 family name alone cannot resolve a production-sensitive internal clutch change.
The correct conclusion is neither 'all parts differ' nor 'all parts fit'; each requested component needs its own match.