When importing text that are many cells long sometimes it causes the entire table to disappear. When I reach the bottom of the table, and I copy and past text that should flow into the other table, the entire frame of the table just disappears. Even though at preflight says no errors.
I've tried to click the plus button at the corner of the Table frame to overflow the text to the next page with the continuation of the table, but it just show a blank box with nothing inside.
There may be a more specific solution/answer, and I suspect it has to do with table length and rows that don't want to break across pages, but —
You might try converting the text to text in Word (maybe in a separate cut-and-paste doc to keep things simple), then converting the text to a table in ID. Kind of 'around the barn,' but it may be more expedient than trying to isolate and fix the root cause.
— | Word & InDesign to Kindle & EPUB: a Pro Guide (Amazon)