Provide courtesy accidentals on ties crossing a system break.
Create a tied note that across bars and has an accidental against it. insert a line beak at the bar during the tie. The continuation ideally should have the initial accidental repeated in parentheses as per Gould pp 80 and 112. The use of parenthesis needs to be optional. Of course where a score has linked parts, the tie-break accidentals in the part should not appear in the score unless the break point coincides, and vice versa.