BMO Harris Bank thought bankruptcy court was the correct venue for requesting a $650,000 deficiency judgment against Mark Anderson, because he petitioned for bankruptcy protection shortly after the bank sued him and Walter Kaiser — with a two-count state court complaint in Chicago — to foreclose on a mortgage and collect on a promissory note.But because Bankruptcy Judge Jacqueline P. Cox issued an order granting “full and complete relief from the automatic stay of Section 362 [of the Bankruptcy Code] to …