There is a chance that the crossover band between the infra bass and the ART region does not add up perfectly, since the infra bass part is not phase corrected. This may show as a small bump or dip around 20 Hz. However, such content cannot really be heard, but rather felt in the body, so it should not reasonably have any impact on the audible experience.
If for example there is a bump and it needs to be reduced or removed, it could be done using the advanced target curve editor (right click, select to add "control points"), and then add a corresponding notch in the target response.
Example: