The file you have is a version, likely containing a specific voice-over translation (lektor). To "create the feature" from these split RAR archives:
: You must have all pieces of the set (from part1 through part74 and beyond). brastockdra-uhd-bd-lektor-retail.part74.rar
: You must document exactly what was wrong with the previous release (e.g., "Audio desync in Chapter 4"). The file you have is a version, likely