Hi Paul,
Stock transfer from WM to IM storage location can be achieved by setting up by choosing appropriate Replenishment strategy.
Hope you are using event driven kanban.
While creating control cycle id for kanban replenishment, choose a stock transfer replenishment strategey(Prerequisite : Creation of Stock transfer strategy - can define/use a custom strategy)
Following settings in Replenishment Strategy may help:
1) In Replenishment strategy, choose control type as : 6) Transfer Requirements froma storage location controlled by WM
2) Use PIs : choose 1 Kanban qty from PI, several LCs possible per kanban
3) Immediate TO Creation - Check the box . This will help in creating Transfer Order automatically to move stock which can then be confirmed by running Open TO report
Regards
Siva