Data Is Lost In The Switching From Stable Rom To Developer Rom?

Aug 4, 2015
Sorry if the question is trivial.
I have a Mi Note Pro with ROM "MIUI (LXHCNCD) Stable" and wanted to know if passing on ROM version "Stable" to "Developer" are lost or not all data / applications / configurations currently present (eg the Play Store or all Google applications).

Thanks for the help.