The attorney who first appears for any party or person interested shall be recognized as the attorney throughout the matter or proceeding unless another attorney is substituted under SCR 11.02 (3).
Wis. Stat. § 879.17
An executor who asked for substitution when probate had just been begun because the heirs desired it and to avoid conflict with them had shown sufficient cause for changing attorneys. Estate of Ainsworth, 52 Wis. 2d 152, 187 N.W.2d 828, 189 N.W.2d 505 (1971).