Are you talking about that "cotton ceiling" stuff that a certain type of radfem seized on, misrepresented and used to slander lesbian trans women as sexual predators? That's largely a myth (the way it was portrayed by transphobic radfems) that started over a small workshop that Planned Parenthood hosted dealing with the issues between trans lesbians and cis lesbians.
http://www.transadvocate.com/cotton...trans-conspiracy-to-rape-lesbians_n_10251.htm
By the way, rejecting someone solely because of their genitals (or what you assume their genitals to be) and effectively erasing their identity and their actual lived lives is transphobic and is, at the very least, based on ignorance. It's not something that's an issue only between lesbian trans women and lesbian cis women, either. It exists with straight men and women, and gay men. Trans men face those problems, too. Sometimes we get turned down by gay men and straight women merely because we don't have an XY body. There's problems with that even with bisexuals!
It also leads to some confused and confusing stances, like how some lesbians will date FtMs but not MtFs.
So that topic was really to discuss issues of body shame and erasure of identity.
Can you provide evidence of that? Links?