Adding Financial Statement Item in 0FIGL_C10

Hi,

We have 0FIGL_C10 and 0FIGL_V10 cubes already in prd.

We have cretaed new cube ZFIGL_C10 that takes data from 0FIGL_C10. In this cube i want to add 0glaccext but it is not present in 0FIGL_C10 and hence i cant add it in zcube.

I can see 0glaccext is attribute to 0gl_account. Can i just make 0glaccext a navigational attribute so that it is available in ZFIGL_C10 and 0FIGL_C10?

Will this affect 0FIGL_C10 and V10 functionality?

If not, how do I do it?