I have a friend who owned shares in a (master?) limited partnership; I think it was an oil/gas deal. They reorganized into a corporation and bought up all the shares of the partnership. My friend got a tax statement (I haven't seen it, but I think it's a K-1) showing the gain as ordinary income. The company said it was treated as ordinary income rather than a capital gain because it was an "involuntary" exchange. The gain was in the high 5 figures.
She's pretty unhappy over the whole thing if for no other reason than that she's 92 and isn't planning on selling anything for obvious reasons. I think her assets are substantial but not so much as to trigger estate tax.
She asked me to find out if this is correct, that an involuntary exchange would be treated as ordinary income. I'm guessing the company knows what it's doing.