You must modify the schema definition if there are updates to the documents that require a change in the definitions that you created in the

Developer tool

.

If you store the schema modification in a file, ensure that the file is available in the location that you configure in the ODBC data source name when you import a

data object

. If you store the schema modification in the MongoDB database, PowerExchange for MongoDB stores the schema modification in a collection called Mersenne_Collection_Metadata. If you edit Mersenne_Collection_Metadata, you may lose the schema modifications.