Femap - prevent automatically compute Principal Stresses & other vectors

[Boghya]

Hi,

After performing an analysis I delete all the output vectors except the normal stresses (x6).
I noticed that after performing an Output>Process>Linear Combination The new output that I get contains also the Principal stresses and other vectors that I do not need. Considering that I have ~50000 this makes a difference in model size...and I would expect also in writing the Output Set.

Is there a way to prevent Femap to calculate this extra vectors?

In the Preferences>Results I have un-checked Compute Principal Stress/Strain (but I assume that it is just for the Solver...as it sais in the tab title).

Maybe also worth mentioning...I do the combination with:
feOutputProcessLinearCombination(full_set...)

I know it is the full set...but the original sets ONLY contain 6 vectors.

Thanks in advance!