Improved Familiar & Diabloist Imp Companion

[Dysfunction]

Book Of The Damned, Volume 1 - Princes Of Darkness, PG 44 wrote:

Imp Companion: A diabolist forms a close bond with a

particular imp, similar to a druid’s bond with an animal
companion. The imp is loyal to the diabolist (though
ultimately loyal to Hell). The imp companion’s abilities, feats,
Hit Dice, and skills advance as the diabolist advances as your caster level increases

Core Rule Book, PG 127 wrote:

Improved Familiar

This feat allows you to acquire a powerful familiar, but
only when you could normally acquire a new familiar.
Prerequisites: Ability to acquire a new familiar,
compatible alignment, sufficiently high level (see below).
Benefit: When choosing a familiar, the creatures listed
below are also available to you (see the Pathfinder RPG Bestiary
for statistics on these creatures). You may choose a familiar
with an alignment up to one step away on each alignment
axis (lawful through chaotic, good through evil).
7th level - can take an imp
Improved familiars otherwise use the rules for regular
familiars, with two exceptions: if the creature’s type is
something other than animal, its type does not change;
and improved familiars do not gain the ability to speak
with other creatures of their kind (although many of them
already have the ability to communicate).

Can I have the same Imp gain the benefits of being an animal companion and a familiar?

[Avoron]

No, you cannot.

From the rules on familiars:
"Only a normal, unmodified animal may become a familiar. An animal companion cannot also function as a familiar."

But honestly, having two helpful imps is better than one anyway.

[Skylancer4]

I am 99.9% sure this has come up before (if you use the search function).

[Dysfunction]

yea, I just saw that just after I posted it.
went to delete it, but cant after someone responds.