I have attached a few examples. They may not be the best examples for a chemistry class, but they demonstrate how chirality is handled by Reactor.
A bond connected to a chiral center is modified by the reaction. The transformation does not define the chirality in reaction schema.
Result: Chirality is lost in reaction center.
Note: The chiral center which is not part of the reaction center is not modified.
A bond connected to a chiral center is modified by the reaction. The INVRET (inversion/retention) atom property defines the chirality modification in reaction schema.
Result: Chirality is preserved in reaction center.
The reaction does not modify bonds connected to chiral centers.
I hope this helps.