Thank you for the question and interest in upgarding. I have moved your post to the correct forum 'Pega Upgrade Center' to get attention from right team. Someone from upgrate team will respond shortly to this.
As Ravi mentioned there is no upgrade path availble for existing 6.x applications to upgrade to Pega7 multitenant.
You can take R-A-P from 6.x system and deploy it in fresh install of Pega7 Multitenant system. So that that application will become one of the tenenat. However you can't cary forward the work which got created in 6.x (Non Multitenant) to Pega7 multitenant system.
let me tell you our conclusion on this after so much efforts and discussion with experts:
1.we can’t upgrade directly to Multi-tenant system from earlier versions of Pega and upgrade directly to Multi-tenant system from earlier versions of Pega.
2.multi-tenancy cannot be applied to a non multi-tenancy Application
3.we can initially upgrade the environment to Pega 7.1.8 using standard upgrade. You need to install a new system for Multitenant and you can export the application from the upgraded system and install the same on Multitenant system.
We are upgrading form 5.5 to 7.1.7.. problem we are facing is with the pdf generation. After upgrade the pdf is generating properly but the data is not available for the properties but data is available on the clipboard..
Can any one share your thoughts if you faced this kind of issue.