Hi Vura_1234
Have you purchased a DBXL license or are you using a trial license?
You can currently do what you want to do using DBXL, DBXL includes a migration tool. Depending upon what sort of forms these are (IPFS with code behind or client only) how you integrate is slightly different. We do have a new feature coming out in DBXL 2.4 that is going to make this scenario very very easy to implement with existing SharePoint documents.
Please contact me directly so we can discuss this in more detail.
Ted