Hi Richard,
At first validation, we convert the dictionary to the format digestible by the validator. This process is a combination of filtering out inactive and outdated concepts and descriptions. Also, in terms of this specific version, the last column in the file is a fixed 4,000 character value, which is mostly wasted white space. This would explain the change in size you’re referring to.
Let us know if you have more questions on this.
Kind regards,
Justin