How to enable the 'Export' button on the Bank Statement Manual Reconciliation task?

We are using custom roles for cash management, splitting between loading/creating statements and reconciliation-related tasks. This is to comply with segregation of duties.

We wish to leverage the 21D functionality to import bank statement reconciliations, but we do require the ability to export all statement lines and transactions available for reconciliation. However, the 'Export' button that triggers the job 'Transactions Available for Reconciliation Report' is missing from the users with the role to reconcile transactions. It is active for the users who create/load/maintain bank statements - which is not relevant to their job.

I'm wondering which privilege is controlling this - we're doing a thorough analysis and comparison between roles, however no conclusion so far. Any help is appreciated!