HI Peter
Try this...
Midi Interface
OUT
to
PE Midi
IN
PE midi
OUT
to
M1 Midi
IN
M1 Midi
OUT
to Interface Midi
IN
While on M1
EDIT
mode , it will show if the Patch is
SINGLE
OR
DOUBLE.
On your PE,
at Page
"0"
select
SINGLE
or
DOUBLE
accordingly to match the patch you are editing
Peace
Jonathan Yeo