Official answer from Vlaada - No - It's only healing 1 wound.Was going to ask for a source, but decided to check the rulebook - rulebook seems to support this claim:
Rulebook, pg. 10 wrote:
If the Unit has two Wound cards (because it was exposedThat's a bit of a surprise to me, and something I'll have to keep in mind in the future.
to a Poison attack), it needs to be healed twice to be