Why does the Snippet Category I've assigned to all my snippets keep getting removed by RoboHelp?

I upgraded to Version 2022.3.93 (i.e., Update 3 of RoboHelp (2022 Release)) last month. Created Snippet Categories so I could organize all my snippets. (My snippets were created in RoboHelp 2022, not an earlier version of RoboHelp.) Went through each snippet and assigned a Snippet Category. All went well for a little while. In the left panel of RoboHelp, I would select Snippets. All my snippets would display in their correct Snippet Category. I could drag and drop to my topic without issue. Then one day, I added a new snippet with a Snippet Category. Immediately all my other snippets' categories were removed. In the left panel of RoboHelp, after selecting Snippets, the only snippet I would see was the new one. All others were gone. (They were still available if I went to Contents > assets > snippets. But dragging and dropping from there to my topic is not the same/does not work correctly.) So I took the time and went back through all of them again to assign a Snippet Category. Again, all went well for a little while. Then one day, I added yet another new snippet with a Snippet Category. Immediately all my other snippets' categories were removed. So I again took the time to go back through all of them to assign a Snippet Category. This has happened four times now. I'm afraid to add a new snippet (with or without a Snippet Category) for fear that this will continue. Has anyone else experienced this to know what's causing it? Is there a way I can avoid this from happening (and having to go back through all my snippets to assign a Snippet Category)?