AST:xxxx form shows AssetLifeCycleStatus attribute from AST:Attributes form which is different from Status attributes on BMC.CORE:xxx form.
Default status is Deployed so if want any other status for a CI then you should do that on AST:Attributes Form. You can refer out of the box transformation CI-CMDB for AST:Attribute record creation/update or you can lookup instance Id of CI record and create an aroutput step to push on AST:Attribute based on reconciliationidentity=InstaceID(the one you looked up) with required status and other life cycle attributes. then during reconciliation OOB workflows would update recon ids on AST:Attributes form
MarkAsDeleted would be updated BMC.CORE:xxx form then AssetLifeCycleStatus would be updated to Delete