Muhammad - You know how corporate purchase are. Momma buys something and all the kids claim it's theirs.
Ingersoll-Rand bought Superstav, the Czech Republic based company that designed and produced the EarthForce line. Immediately, all the Bobcat dealers I talked to were saying "Bobcat bought EarthForce", because it made them feel good, I suppose. I can't see that it makes much difference, but it's pretty clear now that I-R thinks the smaller EFs should be shown to typical skid steer audiences, whereas the larger ones will profit from having the I-R name instead of the Bobcat one, and be sold from dealers with more of a "heavy equipment" audience.
It makes sense to me. Especially after having several people with skid steers tell me they wanted to hock them in favor of an EF-400 or EF-500 after seeing mine. When I first heard that EarthForce was being incorporated into the Bobcat line, I thought of the "fox guarding the henhouse" analogy. I didn't believe it for an instant, because it didn't make any sense for I-R at all. Then, when I got my machine, I noticed it had I-R logos on it, but no Bobcat ones. But, for the smaller ones to be sold as Bobcats, that does make sense.
In answer to your other question, all the EarthForce folks are still there, they're just reporting to I-R/Bobcat folks.