”the odd one will be segregated” - do you mean the trans prisoners? How are we deciding which odd ones will be segregated?
“get all the details sorted out” - what sort of details are going to get sorted out in some other magic way so that men who identify as women can still get to use other women prisoners as validators of gender identity, but no female prisoner is frightened/ distressed/ hurt/ traumatised.
what “new procedures”? the law around single sex prisons hasn’t changed, why are new procedures needed to accommodate the preferences of men who think they are women (or for whom this is convenient smokescreen while in prison).
”new issues”? What’s new? Reality hasn’t changed, male and female haven’t changed, humans still can’t change sex, and it is still barbaric to force a woman to share a cell with a male person.
This is just a load of wafty hand-waving away of hard cases because there is no magic answer that gives these men exactly what they want without female prisoners paying the price.
There is a conflict of rights that can’t be dismissed with a “I expect someone will sort out the details” hand wave.