Heya there. I have this complication too and it's affecting both my luminaries >_< . So I went to reading about it online but they kinda had ambiguous answers - mostly regarding the house systems. But I found this one piece of an article might be helpful - though I'm sure you might've already read something along it's lines.
"Next, we have to consider the differences between the Sign Cusps and the House Cusps. House Cusps are relative and extremely flexible, particularly the intermediate house cusps. Depending on which house system you use, a planet may fall in different houses. For natal interpretations, a planet close to a house cusp, particularly when it is about to enter the next house, can often be interpreted in terms of both houses; blending the interpretations of the houses is often both useful and appropriate in these cases. In horary and predictive astrology, a planet within 3–4 degrees of a house cusp is usually interpreted as being in the next house."
I'm inclined to believe what it's saying cause, coming from personal experience, it explains why I have a tonne Virgo energy even though I BARELY have any aspects relating to it. Also I was pretty much born on the equator, so my Houses are practically equal and stay the same, regardless of House system, so the cusp might apply even more when the house changes when using a different system.
EDIT: Just realised your sun is also on an anaretic degree so maybe you'd like the full article on it :
http://therealastrology.com/ask-kev...-daily-horoscopes/110-born-on-the-qcuspq.html
Hope this helps
))