DaGarmo pg 155 slurs or ties are included within original unless after last note of original then if slur or tie continues after repeat it is rebrailled after repeat sign. So does it matter that the measure that is previous to the original to be repeated is tied at the end also? So in example measure 6 is tied to measure 7 does that hinder the use of the repeat sign for measure 8?
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The way you have Brailled this example with the repeats is 100% correct! (Be sure to remove the extra 4th octave indicator on measure 7 if you chose to retain the repeats.)