As is, I have our HVAC techs submit a blank app submission at the start of the job with just the customer name to auto generate a unique submission/PO# they can use to buy materials for that job. Then the tech simply edits the submission on their mobile device as they progress the job and resubmit changes. This works fine, except when I make changes or add to the app. If I modify the app at all, I have to wait till all service tickets are completed before I can publish the new version. As of now I have waited 3 weeks, and still cannot publish my new app version due to incomplete tickets. If I don't make sure all tickets in progress are completed before publishing, the techs have to start over any jobs in progress, reassign materials PO#s, and cannot modify a submission from a former version of the app. If there was an allowance for the mobile devices to edit a previous version/submission of the individual app, even just one generation, I could make changes on the fly as needed, without impacting the techs productivity.