I know this question has probably been answered, but can't seem to find it.

We finally (bravely) made the step from '08 SP5 to '09 SP4.1.   All seems well.  Every time an old version drawing is opened, it says "it will be saved in the new format".  All that is well and good.

When we are working with subassemblies, we save the new format subassembly and SolidWorks even says all the components will be updated too.  Well this is not happening.  Upon saving the subassembly, I open one of the parts, and it is still in the old format.

Is there a toggle or setting somewhere I can set to accomplish this???  Meaning once I save the subassembly, it will forcibly save the components in the new format.  I assume that all the individual parts being current will lead to slightly better performance.

Thanks.