Duplicate
rule not firing with data loader batch size of 200
Duplicate rules does not
compare data within same batch of record. So only option is to set batch size
equal to 1.
Invalid cross reference id using process builder
When you develop the process in a sandbox you are providing the name of the
group or queue and the process builder links it to the internal ID behind the
scenes. Unfortunately the IDs are typically different in your dev org and
production org.
To
fix this, after you deploy, you will need to modify the process (clone) in the
production org and re-link the queue by name in the prod org so it gets the
proper ID. When you activate the cloned version, it should work as expected.