Rares do not drop Higher tier maps

Currently have done about over 10 T6 maps but not a single rare at the end of maps or anywhere have dropped T7 maps, I bought a T7 map off the disc and did it did not get a single map drop the entire map.

Anybody know a fix or what I should do?

Only bosses drop higher tier maps now, unless you have the higher tier atlas passive I think

I have done multiple T6 maps with map bosses and still nothing