You can merge two qvw’s in various ways:
1. Copy the script from first document to second document. Next copy all the sheet objects from first document to second document.
2. Binary load first document to second document.
a. You can only use it as the first statement of a load script.
b. There can only ever be one binary load per .qvw.
ex: Binary C:\Docs\MyFile.qvw;
From there you can then add additional traditional load statements to build on the data model.
Next copy all the sheet objects from first document to second document.
To do a binary load use the QlikView File button in the Edit Script dialog.
3. Copy data model:
a.Create QVD’s of the tables (exclude tables which exist in second document) in first document.
b.Use these QVD’s in second document.
c.Then copy paste the objects to second document if required,
But you have to check synthetic keys created in second document, so be aware of that.
Any one wants to give inputs to above are always welcome