(a) For Prejudice. Upon the defendant's motion, the court must transfer the proceeding against that defendant to another district if the court is satisfied that so great a prejudice against the defendant exists in the transferring district that the defendant cannot obtain a fair and impartial trial there.
(b) For Convenience. Upon the defendant's motion, the court may transfer the proceeding, or one or more counts, against that defendant to another district for the convenience of the parties, any victim, and the witnesses, and in the interest of justice.
(c) Proceedings on Transfer. When the court orders a transfer, the clerk must send to the transferee district the file, or a certified copy, and any bail taken. The prosecution will then continue in the transferee district.
(d) Time to File a Motion to Transfer. A motion to transfer may be made at or before arraignment or at any other time the court or these rules prescribe.