I am working with version 1.8.3.641. Now I have tested the beta version 1.8.4.651 and found that the file size increases extremely.
e.g. A file created with 1.8.3.641 (all images are linked, not embedded) >>> size 10 MB.
This file opened and saved with Beta 1.8.4.651 (all images are linked, not embedded) >>>> size 800 MB !!!!
Is that normal?