I have a strange problem with my Magento 1.6.2 shop. We have several payment options in use. The usual SagePay and PayPal options are working fine, and exactly as expected. The Cheque and Bank Transfer payment options are not, and it is causing disruption to the workflow.
When an order in placed online, it has a status of "Processing". All orders with a status of "Processing" are downloaded via our 3rd party software and entered into Sage200.
Once they are dealt with at our premises, the order is marked as "Shipped" and the order status becomes "Complete" in Magento. Normally...
What seems to be happening with Cheque and Bank Transfer paid orders, is they are marked as Shipped as normal, but they go back to "Processing" Status, which means they are then downloaded to our Sage200 system again!!
Does anyone know why this might be happening please?