Indesign files not syncing with Incopy files

Hi:
My work group has had this problem periodically for over 15 years, I still do not have a good solution to it.

Our designers create an Indesign layout, and assign the various stories as an Incopy assignment.

The editors edit the .icml files to fit the pages.

When the designers open up the Indesign layout and update the content of the icml files, they do not wrap/hyphenate properly the way the editors have them in Incopy. The text can have different line breaks in the paragraph, causing the icml files to be either short or long as to where they should end on the page. This is not an update problem of the Incopy assignment or individual icml files.

I have noticed one thing: sometimes when there is an illustration with an irregular text wrap around it, the text wrap is different in Indesign than it is in Incopy. But that is not always the issue, sometimes it happens when there is a regular horizontal or square wrap, and sometimes where there is no text wrap at all.

Currently we are on Indesign/Incopy 21.1 working on MacBooks, on a shared server, but as I said this has happened periodically for many years.

Any insights would be appreciated.

thanks
Kevin Mulligan