@Eryk, with your feedback I was able to determine they were empty notes. Couple more questions as I figure out my workflow/study flow.
I use my tablet for personal study/meetings. I consider this my 'master' database as I've only ever used JW Library merging apps that just combine everything together.
1. I see that highlights don't have time stamps. Occasionally, I change the color of certain highlights in my Daily Bible Reading.. If I export highlights from my phone database and then import them into my tablet database, how are conflicts resolved? Or should I just be selective in what I study on my phone, like perhaps upcoming study Watchtowers and only export highlights from articles I haven't studied on my tablet yet?
(edit: just saw in the help file a possible answer but still asking how best to do this. As my tablet JW Library database is the master and would be open in JWLManager, how would I make those highlights the 'primary?' Export tablet highlights, open phone database in JWLManger, import those highlights, now after merged, export highlights from the opened now modified phone database and then import them into the tablet database?) - I'm sure I'm overcomplicating that.
I like the idea of being able to delete notes with certain tags and even export them to an excel file before deleting them. For some time I was using a temporary tag but eventually gave up after realizing how long it would take to delete them by hand and the occasional accidental 'marge' addition. I will start using my temp tag again. IE: for the Cong Bible Study, I always add the extra questions, "What does this account teach us about Jehovah? & What practical lessons can we learn from this account?" but do I need 50+ notes that say that? 😃
2. Based on your knowledge of these databases, I was wondering if you have any suggestions regarding saving very long notes, like long typed out notes from broadcasts or public talks? Right now I have a dedicated note taking app. But like the idea of having everything in one place. Maybe adding such notes to the day they happened in the Examining the scriptures daily publication or as an "unattached" note in the personal study area. But also don't want to make these database too large or slow. Any concern from what you'v seen about making the JW Library database too large and text heavy?
3. Is anyone aware of any boolean operators that work in the "search" field under 'Notes and Tags' in the Personal Study tab? I see '*' star doesn't work for a wild card. I realize adding all my notes from future broadcasts, public talks etc will only be useful if I can find them again in the future almost like a spiritual personal knowledge base (PKM). Any suggestions are welcome. Also just had the idea of occasionally exporting 'notes' using JWLManager to another app that maybe has a more forgiving search function that I could fall back on in a pinch, if I'm trying to find something and don't have the exact phrase.
Thanks again.