Question: Firetrap + Igniting enemys

Firetrap does a huge chunk of fire damage on explosion, which makes for a nice ignition of burn damage

firetrap also does its own ground fire damage over time thing.

does the 4/3 damage over time from igniting an enemy with firetrap's initial damage stack with the ground fire's dot?

As far as I know normal burning and the ground effect stacks.

Yes.

All burning stacks.

Enemies can only have one Ignite effect.

Ignite + ground fire = two burning effects stacking