Hi Harun, assuming that you will be able to handle everything post property type change, here is how you can achieve it.
First withdraw your property in 01-01-06 or 01-01-07, which ever is your current development version.
Next development version which you and your team will open up is 01-01-08 by locking previous version. In this new version, create (NOT SAVE AS) same property with same name and change property type. This will take care of it.