Is going back to BD role a step backwards?

i'm currently a commercial manager (equivalent of AE, responsible for closing deals) in a firm that has 3 business units (i'm in the one that does digital

platforms, the other 2 are like commodity trading houses). each of the 3 business units have got their own commercial managers, whereas there is a separate business development team that does pipe gen/lead qualification across all 3 business units. 

in other firms i've been in, the equivalent of the bd roles will promote into the commercial manager roles (eg sdr into ae), but at this current place, they are separate tracks that are paid equally well. 

the business unit i'm in has got very lousy products, along with targets that are plucked from thin air, so i’m quite sure i won’t meet target, in fact i'll be super far from it. the rest of my team has the same sentiments. 

the head of the bd team has asked me to move to her team instead, and i’m considering. 

Pros: bd team targets are easier to reach, therefore likely longer lifeline in this firm. I won’t have to explain to a future employer why i was so horribly far from targets

Cons: am worried it’ll be harder getting back into an AE type of role if i take the bd role now, and that it might seem like a step back in my career 

I enjoy doing lead gen, but also enjoy the high of closing deals.. what do you guys think about this?