webmethods7.1 compatability with 6.1 components

hello evry one

i am trying to connect mywebmethods7.1.1 with IS6.1 .But before starting i just want to know whether myWMS 7.1 is compatable with 6.1 components.I checked in the advantage but was unable to find infact i found out that rite now 6.1 components cannot be upgraded to 7.1 Is it the same case with connectivity also.

thanks in advance