Processing level 2A vs 2Ap using 2.5.5

When I run Sen2cor 2.5.5 I get Level 2Ap (pilot) as output not L2A, as expected.
These processing levels differ and I find it unsuitable to mix them in a time series analysis.
How can output processing level be determined in Sen2Cor 2.5.5. setup?

Regards
/Jonas