Dnj,

I have not had any problem switching registration on both the X1 and SD1 during song play or arranger play. In fact, I just tried it repeatedly on my SD1 for about 10 minutes with no problem. It switched everything as expected without any noise or unwanted effect. May be Maged could try it on his X1 to verify this.

When using single registration, the screen displays 10 titles at a time. With block registration, I just use a number between 1 and 198. The screen does not display any title until a memory location is selected.

Henry