Drawing Views Disappearing!

Has anyone ever had drawing views disappear?  I went to open my drawing file this morning and one of my views disappeared. The dimensions were still visible but no view. I had to recreate the view which of course lead to more work on my end since that view was also linked to a section. Then I noticed another view on another page seems to be MIA.

Please help.  Is it something I am doing or just Solidwords going rogue?

SolidworksDrawings And Detailing