MN Absentee vote counting changes

I noticed MN Sec State Mark Ritchie on local news pimping out the new absentee vote counting changes.   They will no longer be counted at each precinct level, but rather at centralized locations by “special panels of election officials”.   The individual precinct does not touch them.  It is in the name of “accuracy”.

It is reported that absentee voting is at the highest in 20 years, citing 29,000 absentee ballots and coupled with a low voter turnout overall.

Does anyone have more details on these special panels and the chain of custody of these ballots?   I just know when Mark Ritchie is pimping something, one ought to be suspicious.  We all know how the Coleman/Franken thing turned out.