Steps to be followed:
1) Copy all the files required(qvd's) to a storage disk where you would like to save all the files.
2) Import the QVF(the app) through QMC->Apps tab>import(Button in the bottom of the screen).
3) Once imported, QMC imports even the data connections. Create new DSN for ODBC if required
4) Go to connections in QMC and modify the paths of all the imported connections.
5) Go to the hub and reload the app now, you should not face any issues.