Convert Project

if there is a easy way to convert  all of my project from version 9 to versio 8, i know it's so hard and deffecult but i don't have any choise ,then for example in version 9 i can create functions on aggregate how can i use function in version 8?i'm shure i will found a lot issus on this version so please help
best cheers

There's no way to directly convert one application from an higher version to a lower one. The only option for you is to open both versions of service studio side by side and replicate everything you have on the newer version to the lower one.

Hope this clarifies the question for you.

As with regards to aggregates, you can either create Advanced Queries or Simple Queries, depending on their complexity.