diff --git a/src/bcf/README.md b/src/bcf/README.md
index 906965b9c1..1ce991d97f 100644
--- a/src/bcf/README.md
+++ b/src/bcf/README.md
@@ -4,7 +4,10 @@ A simple Python implementation of BCF. The data model is described in `data.py`.
 Manipulation of BCF-XML is available via `bcfxml.py` and manipulation of BCF-API
 is available via `bcfapi.py`.
 
-Currently supports BCF version 2.1.
+ - BCF-XML version 2.1: Fully supported
+ - BCF-API version 2.1: Not supported, will probably tackle this after BCF-API v3.0
+ - BCF-XML version 3.0: Almost fully supported, except for the documents module
+ - BCF-API version 3.0: Not supported, but work underway to support it
 
 ## bcfxml
 
diff --git a/src/blenderbim/blenderbim/bim/module/sequence/operator.py b/src/blenderbim/blenderbim/bim/module/sequence/operator.py
index a591f47b77..8da8d671a2 100644
--- a/src/blenderbim/blenderbim/bim/module/sequence/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/sequence/operator.py
@@ -571,9 +571,6 @@ class AssignPredecessor(bpy.types.Operator):
             relating_process=IfcStore.get_file().by_id(self.task),
             related_process=IfcStore.get_file().by_id(props.active_task_id),
         )
-        ifcopenshell.api.run(
-            "sequence.edit_sequence", self.file, rel_sequence=rel, attributes={"SequenceType": "FINISH_START"}
-        )
         Data.load(self.file)
         bpy.ops.bim.load_task_properties()
         return {"FINISHED"}
@@ -593,9 +590,6 @@ class AssignSuccessor(bpy.types.Operator):
             relating_process=IfcStore.get_file().by_id(props.active_task_id),
             related_process=IfcStore.get_file().by_id(self.task),
         )
-        ifcopenshell.api.run(
-            "sequence.edit_sequence", self.file, rel_sequence=rel, attributes={"SequenceType": "FINISH_START"}
-        )
         Data.load(self.file)
         bpy.ops.bim.load_task_properties()
         return {"FINISHED"}
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/assign_sequence.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/assign_sequence.py
index d72d237326..5807746dd4 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/sequence/assign_sequence.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/assign_sequence.py
@@ -23,5 +23,6 @@ class Usecase:
                 "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
                 "RelatingProcess": self.settings["relating_process"],
                 "RelatedProcess": self.settings["related_process"],
+                "SequenceType": "FINISH_START",
             }
         )