Peace Br. Wakas
Again sorry for intruding on a question that is for brother Joseph, but I think if you take a look at verse 60:10 and take inconsideration verse 4:24, you can easily figure out Insha'Allah that there is definitely the right for believing men to marry women who have a current married status, but have emigrated and will be under examination also meaning they are not free women. They are being examined so they would be taken in as captives.
The married women in verse 4:24 which are lawful for believing men are only from what the "right hands posses(ma malakat aymanukum)." There would be no other than married women that would be lawful in married other than what is stated in verse 60:10 or any other wisdom that can be extracted from the verse which would be considered captives.
4:24
Also (prohibited are) women already married, except those whom your right hands possess: Thus hath Allah ordained (Prohibitions) against you: Except for these, all others are lawful, provided ye seek (them in marriage) with gifts from your property,- desiring chastity, not lust, seeing that ye derive benefit from them, give them their dowers (at least) as prescribed; but if, after a dower is prescribed, agree Mutually (to vary it), there is no blame on you, and Allah is All-knowing, All-wise.
60:10
"O you who have believed, when the believing women come to you as emigrants, examine them. Allah is most knowing as to their faith. And if you know them to be believers, then do not return them to the disbelievers; they are not lawful [wives] for them, nor are they lawful [husbands] for them. But give the disbelievers what they have spent. And there is no blame upon you if you marry them when you have given them their due compensation. And hold not to marriage bonds with disbelieving women, but ask for what you have spent and let them ask for what they have spent. That is the judgement of Allah ; He judges between you. And Allah is Knowing and Wise."
Peace