Remove list of conflicting module. Both modules can be installed and will work in parallele. Thought the workflow logic is different.

account_import_line_multicurrency_extension/__openerp__.py

@@ -32,7 +32,4 @@
  'tests': [],
  'installable': True,
  'license': 'AGPL-3',
- 'conflicts': [
-     'account_banking_payment_export',
-     ],
  }