Can Animate Undead be used on the same corpse multiple times?

Question

The spell Animate Undead (not Animate Dead), animates a corpse for a number of rounds equal to your level. After this duration, the undead presumably becomes a corpse again.

The spell has the following to say:

a soul is present in any corporeal remains for which the creature has not been resurrected or previously animated as an undead. a soul can also be obtained from trap the soul, magic jar, or similar magic.

but the spell doesn't outright state that a soul is required, at least on the d20PFSRD. As written, I am unsure if a corpse that had already been used for Animate Undead is a valid target for a further casting of Animate Undead. Can I cast Animate Undead on the same corpse again?

I have already looked at this question, but it is referring to a different spell and situation.

Answer 1

A soul is required for some undead, but not all of them. Starting with Animate Undead III, in the table, the Shadow appears to be the first Undead which requires a soul.

Unless you're dealing with one of the small handful of undead which require souls, which you can't re-animate due to the line

a soul is present in any corporeal remains for which the creature has not been resurrected or previously animated as an undead.

I would say the important line is

Remains must be mostly intact.

So, as long as the remains are "mostly intact" after each casting, it would appear you can keep re-animating them.