Modified form reverts back

I have a modified form of PR35.2. It has the box checked for "Default Presentation". Whenever I modify a form and make it the default presentation, I always add an "*" at the end of the Title in the form properties. That way, it's very easy to know if a form has been modified in some way (since it's not always obvious). It is also save with a custom form id of "PR35.2_CUSTOM"

In any case, this has occurred now several times: After saving the form, doing a clear IOS cache, restarting the browser etc - the customized form appears when you put it in the search box. Users also have it as bookmark with the URL of "LAWFORM|TKN=PR35.2"

It appears that sometimes when they use the bookmark, it does not bring up the custom version, but the original one. Is it because the URL for the bookmark needs to be "
LAWFORM|TKN=PR35.2|ID=PR35.2_CUSTOM"? I thought if you made it the Default Presentation you do not have to do that. But it's the only reason I can think why this would do that.