ChaRM: combination of transport strategies

Hi ChaRM-experts!

I plan to map the existing transport landscape into ChaRM scenario of SOLMAN and have the following questions:

1) Is it possible to combine ChaRM-functionality and still use the old transport settings (without ChaRM) for the same system landscape, letu2019s say:

DEV --> QAS --> VO1 (Without ChaRM and with virtual system)

DEV:101 --> QAS:101 --> PRD:101 (With SOLMAN ChaRM)

2) What will happen with existing transport, transport in pipeline by switching into ChaRM scenario?

3) Is there some restrictions for the implementation of ChaRM for SAP R/3 4.7 systems?

Thank you very much!

Holger