Expired domain 301 redirect lowered the UR of my site?

Expired domain 301 redirect lowered the UR of my site?
I bought an expired domain from a seller for $60. Clean and everything. I redirected it a week ago, today ahrefs picked it up and reduced the UR of my website from 12, to 8. Is this normal? Or is it a negative sign of the expired domain?
++++++++++++++
list of top cheapest host http://Listfreetop.pw

Top 200 best traffic exchange sites http://Listfreetop.pw

free link exchange sites list http://Listfreetop.pw
list of top ptc sites
list of top ptp sites
Listfreetop.pw
Listfreetop.pw
+++++++++++++++
Any advice from someone who has redirected domains before would be nice. Many thanks.
I don't understand why do people care about third party metrics so much.
Google doesn't care what the TF/DA/UR/DR of your website is, the real question is, did the redirect improve your rankings or made it worse?
I don't understand why do people care about third party metrics so much.

Google doesn't care what the TF/DA/UR/DR of your website is, the real question is, did the redirect improve your rankings or made it worse?
I am telling you why, because these days people buy loads of guest post. If your site is shit in Ahrefs nobody give a damn fuck, metrics + traffic = win-win.
some experience says, expiet domains with a good metrix = $$$$. But sometimes expiet domains with good metrics = Average
Google's algorithm is still a mystery to me
have redirected it to homepage or any particular page ?

whats the improvement in Ranking?

a lot of factors are there sir.

forum hosting online
wirenine.com
make money quick
domain 77
ghostbusters
hostel 4 movie wiki
make money losing weight app
dewlance.com