BO 4.0 -Client server patch level mismatch

Hello Experts

My BOE is 4.0 and the patch level is SP6, however the client tools are yet to be updated and they are on SP4 . I would like to know the following :

1. Is it OK to develop reports using Rich Client SP4 and export it to the BI launchpad which will be on SP 6. If not, what could be challenges which might arise due to this client server mismatch?

2. Is it Okay to perform translations using Translation Management Tool on SP4 and export the .tmgr file to the BI launchpad which is on SP6 ?

Regards,

Anshul