Yes, ecomdash and the shipping software will work side by side. There is no extra connection needed for the two to work together seamlessly.
As ecomdash imports your sales orders and maintains the quantity on hand for your marketplaces.
The shipping software will also import the order into the system so that you can work the order to be shipped to your customer. You will work the order as you normally would out of the shipping software.
The shipping software will post the tracking data back to the sales channel. ecomdash looks for status changes for orders that were previously imported into ecomdash at the interval that is set to import sales orders.
Ecomdash will see that the status of the order has changed from unshipped to shipped on the sales channel and move the order to complete within the system.