iControl - changing virtual server from ip forward type to standard

Hello,

seems another tricky question: when VS changes from standard to ip forward(or some other VS types - stateless, l2 fwd..) then it adds new key value pair in json: ipForward: true, but in standard VS case there is no such key val pair.

Result is that VS of type ip forward cant be changed to standard type via iControl using PUT/PATCH(tried both but no luck) - that ipForward key val pair is still there and cant be set to false. (workaround seems to be recreate this VS - but then I better shouldn't miss any configured field), or someone has some way how to do it via PUT/PATCH?

Thx

Jakub