Thanks!
But!
Indigo OS is used on Elite and Mark Series. At this time, Indigo does not support raster integration (from IMC documentation)
According to our internal documentation, 1-254 are translated as 0 on the Elite HDI. Only the 255(full)/-1(border only) values will draw over raster. (gpiverson)
The Elite 5 HDI only supports the values of -1, 0, and 255 (Border Only, Don't Draw Over Raster, Draw Over Raster). Any partially transparent value is translated as 255 (gpiverson)
Where is the truth?
If Indigo OS does not support raster, then why are you saying that works for Elite Indigo?
In my example I showed you that HDS everything works as expected, but on the HDI no polygons. I changed the value to -1 - same thing. Change to 255 makes no sense, because then it's easier to do without at5.xml!