Yes, the guide needs an update, @bastianallgeier posted a solution in another thread, let me find it 
Although, no, that was about mixed storage: Content loss on pages with virtual data - #5 by grommasdietz, just posting for reference.
Yes, the guide needs an update, @bastianallgeier posted a solution in another thread, let me find it
Although, no, that was about mixed storage: Content loss on pages with virtual data - #5 by grommasdietz, just posting for reference.