NOT FIXED! I can still reproduce this issue on 5.9.4.1.20180726225200_f44ec83. Found code of PRs (mentioned in issues:471) are present on appliance but not sure why it is not working.
Created attachment 1472916 [details] fixed_proof_5.9.4.2.mp4 Fixed! I can create migration plan with both `migrate it immediately` and `migrate it later` options. Verified on: 5.9.4.2.20180802030318_f91df08