First, there is no conflict between being "made righteous" and imputed righteousness of Christ. One has to play mental gymnastics in order to make that case.
Second, the use of the word "imparted" is much like the word Trinity. Neither are directly found in scripture but are the means to communicate what is in scripture. It cannot be said that because there can be found no direct statements or use of words that means it is false. Usually such arguments are made when the position held is being demanded to be affirmed by everyone else but stands of shaky ground. Weak positions require bluster and heated words to support them.
2 Corinthians 5:21
21 For our sake he made Him to be sin who knew no sin, so that in Him we might become the righteousness of God.
There is a clear statement of where our righteousness comes from. It come from Christ. We have Christ's righteousness because he took on our sin.
Philippians 3:9
9 and be found in him, not having a righteousness of my own that comes from the law, but that which comes through faith in Christ, the righteousness from God that depends on faith—
1. we do not have a righteousness of our own. 2. righteousness from God is the righteousness of Christ.
1 Corinthians 1:30
30 And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption,
Because we are in Christ, He became wisdom, righteousness, sanctification, and redemption for us.
Now this is the clear teaching of scripture. We are made righteous because we have Christ's righteousness. This semantical splitting of hairs does not illuminate scripture it weakens the view of God.