Depending on whether your project is version-controlled or not, Control FPWIN Pro7 will behave differently:
User libraries in version-controlled projects will be saved automatically. You will not be asked for confirmation.
User libraries in non-version-controlled projects will not be saved automatically.If you have not yet saved any changes, you will be asked to save or discard the changes.In the latter case, the changes will be lost. After saving, the library changes its state from changed to open.