I update the post with some experiments carried out:
The first image of the post: Zsuite 2.20.0 Z-ULTRAT Single Extruder 0.20 layer and in the test I carried out now it gives the same result with External Material Dual Extruder ABS-Based with standard settings on all parameters (including the Platform height -raft). Result: the first layer of raft was dug into the bed.
I tried with Zsuite 220.127.116.11 (this version only allows Zortrax materials) as you can see from the image there are no problems.
With Zsuite 2.18.0. Version that allows External Materials. External Material Dual Extruder, standard parameters (only temperature changed, not Raft-Bed height) does not present any problems and is like version 18.104.22.168.
In conclusion, I am thinking that there is a problem with the Raft-Bed distance of version 2.20.0. But until certain answers are given, the beds continue to be excavated and it is money that flies given the costs.
The grooves are nice deep to the touch, they are not like the marks left by the raft. when it was printing you could hear it ticking due to the impossibility of extruding.