Material and assigned section regions are changing after meshing. I am attaching the images before and after meshing.

When I submit the job, I am getting an error saying missing property definitions of certain elements ErrElemMissingSection

The procedure I am following is as follows!

1. Step files of the two parts (of the model) are created in an external cad software.

2. These step files are imported into the abaqus and then material and section properties are assigned to individual parts

3. I have created individual instances of two parts

4. I have merged two instances into a single instance using PartInstanceFromMerging() with intersection ON

5. Resulting instance is meshed using Hex elements with sweep meshing technique.

Thanks,