You may want to lock the page object to the baseline grid, to ensure the regular flow of the text, and the alignment of the body text lines across all the columns.
The default value is off.
On the Split subtab of the Extra tab on the Preferences dialog box, tick Lock to Grid.
The behavior is explained in Enable/disable lock to the page baseline grid in Fred4 and Locking to a baseline grid.
Notes
•This functionality uses the variable AFCS_GridLock.