Demdemeh and retainer texts

Name: Demdemeh
[LoB:U]
Cardtype: Vampire
Clan: Tzimisce
Group: 4
Capacity: 10
Discipline: aus pre ANI CEL FOR VIC
Laibon: If any Gehenna cards are in play during your unlock phase, you may move an animal retainer on Demdemeh to your ready region as an animal ally with 1 strength and 1 bleed. While that animal has more than 2 life, he or she gets +1 strength.
Artist: Richard Thomas

Name: Elephant Guardian
[LoB:C/PG2]
Cardtype: Retainer
Cost: 1 blood
Animal with 3 life. Requires a ready Laibon.
When this minion is in combat with an acting minion, the acting minion takes 2 damage during strike resolution each round if the range is close. A minion can have only one Elephant Guardian.
Artist: Brian LeBlanc

if demdemeh makes the elephant guardian into an ally from a retainer does it's text apply when it enters combat?

No. It only retains its life information:
groups.google.com/d/msg/rec.games.trading-cards.jyhad/MfGC7sJ8vh8/9ylhc34zFesJ