promotion from higher version to lower version?

Hi,

As every one know that till BI 4.0 SP4 P6 we are not allowed to promote reports from higher version (SP4) to Lower version (SP2).

Do any good new from 4.0 SP6 or 4.1 onward,  I mean Promotion from higher version (4.1 or sp6) to lower version (sp4)??

Thanks