DIFFICULTIES TO LOAD 2.6.0 SHOW

hello every one, what is the good way to load an 2.6.0 show into 3.0.2
release?
My customer have a show did with 3 x Dp2000 using 2.6.0 wholehog III
and the load into 3.0.2 wholehog III with 1 x dp8000+ 1 x dp2000,is not automatically,there is a lost patch and no dmx working.
Please every support is wellcome.

thanks.
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