KB289657: Data import from Facebook return less or empty data for some pages in MicroStrategy Web 10.x

SYMPTOM:
In Strategy Web 10.x, when data import from Facebook, for some pages, user get less data or even empty data. If search another keyword, user correctly get data.
 
STEPS TO REPRODUCE:
Follow below steps to reproduce with Strategy Tutorial project:

1. Follow steps in KB325135: How to configure Facebook Data Import connector in MicroStrategy Analytics Enterprise Platform 10.x to configure Facebook connector in Strategy Web.
2. Search for pages e.g. "National Geography".
3. Click Prepare Data to Data Preview page, note all tables are empty.
4. Search for other pages e.g. "Juventus", note data are render correctly.

NOTE: result may changes according to the page maintenance status. See CAUSE section for more information.
 
 
CAUSE:
By default Strategy Facebook connector will crawl last 24 hours update for the specified page. For some pages like “National Geography”, we get empty tables since this page has no update during last 24 hours.
 
ACTION:
Mouse hover the search result, chick “Filter post data by date…” to change the time span for crawl, if change to last 60 days or more, data correctly returned.