Issue Summary

This is reproducible on Data Center:  (no)

We can only import up to 1000 members using CSV into an Authentication policy.

Steps to Reproduce

1. Navigate to an Authentication Policy (e.g. https://admin.atlassian.com/o/<org_id>/authentication-policies/policy/<policy_id>
2. Click Members
3. To Import, click Add members-> Bulk entry -> Select CSV file

Expected Results

Increase the limit from 1000 to 10000 so that more users can be imported into  authentication policy

Actual Results

Import is limited to 1000 users.

Workaround

We have to split the CSV file into 1000 rows and import multiple times.