Mate 10 Pro. Is possible to move apps from main space to private space directly?

Not possible at this moment.

Great ideas. I hope Huawei will include this feature in the near future.

At this moment, you can only transfer files between private space and main space. The apps that you want in private space you’ve download them manually.

If you need to transfer other files just rename them as pictures and then you can transfer them. You can also do this for exported contacts vcf file. just rename vcf to jpg. Probably can try for apk but not sure.