I did biur maasaros and vidui maasaros.
I also had some maaser coins from the previous cycle that for some reason I had not done biur and vidui maaseros.
This time I also had kavona for the old coins.
Does this help?
Answer:
Yes, this helps. The obligation of bi’ur applies to whatever maasros one has at home, including maaser from the previous cycle.
Best wishes.