During solution import from the Servoy Admin Page, modules with certain name patterns are handled in a special way. Modules whose names start with "before_import" are handled as pre-import hooks. Their <i>onOpen</i> event handlers are executed before the solution is actually imported. Similarly, modules whose names start with "after_import" are handled as post-import hooks. Their <i>onOpen</i> event handles are executed after the solution is actually imported.
If you have several modules that start with "before_import" or "after_import", they will be all handled in this way, but no handling order is guaranteed. It is recommended that you have at most one pre-import and at most one post-import hook in your exported solutions.
While the <i>onOpen</i> event handlers of pre-import and post-import hooks are being executed, any output printed with application.output will be redirected to the import log, which you can see in the Servoy Admin Page.