Autosaving a Process Flow in SAS Studio

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I'm trying to get SAS Studio to autosave a process flow, but it doesn't seem to be possible.

Autosave works fine with a program (.sas), but for a process flow it does not appear to create the autosave file.

If I go back into SAS Studio after crashing out  it opens with an empty process flow, albeit correctly named.

The version of SAS Studio is 3.8 under SAS 9.4.

The online documentation only mentions programs and .sas files rather than CPF.

Does anyone know if it is possible to get SAS Studio to autosave a process flow or is it functionality not available in 3.8?

Thanks and regards to all.