Using Report Builder 1.0 / 3.0 in SQL Server 2014

Hello

We have been using Report Builder 1.0 & 3.0 since SQL Server 2008 R2 and recently during internal testing on SQL Server 2014, we find that the report builder 1.0 is not available in the SSRS or unable to launch the exe (Click Once & Install methodology)  and we understand from Microsoft that they are moving away from Report Builder 1.0 and this exe is no longer part of SQL Server 2014.

Question

1. Are we okay to save the exe from SQL Server 2008 R2 box and still use that on SQL Server 2014 servers at Customer Servers? Just wondering if this would be valid to do so or does it interfere with Microsoft's licensing contracts.

Any help is much appreciated

Thanks!