Dynamo 1.2 got removed in Revit 2015 after install Dynamo 1.3

1

How to get my Dynamo back for Revit 2015? Dynamo 1.3 force 1.2 version to be removed and it only serves Revit 2016 - 2018. Please help.

2

Discussed a few times recently. Unfortunately it is not possible to have both at this time.