Blood moved by Heidelberg Castle is considered a gain for Ex Nihilo purposes?

Blood moved by Heidelberg Castle is considered a gain for Ex Nihilo purposes if you end with more blood?

Name: Ex Nihilo
[FN:R2, LotN:PG, POD:DTC]
Cardtype: Action
Cost: 1 blood
Discipline: Necromancy
+1 stealth action.
[nec] Put this card on this vampire. This vampire gets +1 stealth, inflicts no damage in combat, and is immune to non-aggravated damage. This vampire cannot gain blood (instead, any blood they would gain goes to the blood bank). During your master phase, this vampire burns 1 blood or is burned. You can burn this card during your unlock phase.
[NEC] As above, but you can burn this card during any Methuselah's unlock phase.
Artist: Steve Ellis

Name: Heidelberg Castle, Germany
AKA: Heidelburg Castle, Germany
[DS:U2, FN:PR, KMW:PAl, LoB:PI, 25th:1]
Cardtype: Master
Cost: 2 pool
Unique location.
Lock to move blood, equipment and/or retainers between any two ready vampires you control. Cannot be used during an action.
Artist: L. A. Williams

If the vampire ends up with more blood than they had, they've gained blood.

Thanks to both