4D v14 databases that have been converted to v15 have the option to re-open their v15 data files in 4D v14.4 or v14 R5.

If the v15 data file is re-opened in v14.4 or v14 R5, no conversion dialog will come up.
Note: Once the datafile has been re-opened in v14.4 or v14 R5, it can then be used in other versions of 4D v14.

If the same datafile is re-opened again in 4D v15, a dialog will come up warning the user that the datafile will be converted to v15.



Once converted to v15, like before, the datafile can only be used in v15, v14.4, and v14 R5. Like before, if the datafile is re-opened in v14.4 or v14 R5, it can then be re-opened in any version of v14.