I am Sharing My Experience while migrating Navision version 5 to NAV13 we have find gaps how to improve the performance of existing qvw. I Feel that if existing application is satisfying your needs of business then try to change those area where you need some improvements instead of starting with ZERO.
We are getting comfort with migrated Navision and reports.
Hope this will give some insights.
Thank you for your sharing.
so far I am happy with Qlik View report which I created 5 year ago. And I don't see any gap when I chang the accounting software to Microsoft accounting package.
By the way did you generate all raw data file with your new account system and use back all QVW script ?
My issue is the pass effort I have put in is a lot . And I don't think I can duplicate it again from ZERO. that I'd the main reasons I think it is better to fix the raw data format For my new account system so I can use back all QV report.