When trying to Export to Excel (Data Only option), only the first 25,000 rows (or other fixed values) are exported, the rest are missing.
Export to Excel (Data Only) has an implicit limit of 25,000 rows. If there are more rows, they are not exported.
The Governor settings are now stored in a single governors.properties file to limit the maximum rows for Export to Excel in order to prevent out-of-memory errors.
SaaS / On Demand Customers: This limit is fixed to 25,000.
Governor Limits in CA PPM