I tried to open a mib over a Dropbox link and it didn't reach to Reviewer because of my iPad storage limit but the data was cached in spite of all. Deleting all issues from Reviewer didn't release the cache. Storage usage shows 2,4 GB's for Reviewer even if Library has no content inside. Restarting Reviewer app and iPad didn't solve the problem.
Secondly how much storage do I need pushing 700MB mib? Seems like having 1,4 GB free space on iPad for that is not enough.
How to release the cache on iPad?