Cannot Export Edited Video But Other Videos Exported Fine

Sorry guys. Not sure why Ann's reply is marked as "Correct Answer" when the issue has not been resolved.

Anyway, I am exporting the same as I do every edit, but this one is not wanting to export every frame, even if I highlight and select them all.  I already re-edited the video, using the same clips, edits, and graphics, and it exported just fine this time.

I've been working with Premiere since it was first released in the 90's for Mac and like with most all software, it can be buggy at times so I'll chalk it up to another unknown glitch, but thanks for replying though.

Although I've been ocassionally using Premiere for decades, I've never used it on thelevel I'm using now so essentially, I'm a newbie.  So I tried importing, but all of the files imported all mixed up, importing the non-edited files and tossing the music and graphics at the end.

I started re-editing the entire project, inspecting my export options whenever I make any major edits, warping, adding graphics, etc. but so far, all remain good with my new edit.  It is a strange thing though...

Let me ask you folks...  is it best practice to pre-edit my individual clips and add my warping and color adjustments if required to each clip, and then import those clips and add my disolve transitions and music?  Or, is it supposed to be just as good to import my unedited 7 minute video clip, and cut that one clip up and keep importing the same clip and editing it as needed?

I hope that's clear but as I see it, there's bascially two ways to import and edit clips.  The first way seems to allow a more smooth scrubbing and editing, rather than importing the larger/longer clip as often as I need and keep chopping and editing that one clip. Premiere seems to flow ad work smoother if I imprt and use clips that are as much pre-edited as possible (I'm running an i7 CPU 4th generation, 32 gigs ram,  two SSD hard drives, editing on the 2nd drive, so I have a fairly decent and clean system.

Thanks for your replies!

I am bascially making 2-3 minute video tours for real estate.