I have been writing a custom source adapter that uses a file connection within the connection manager. If I hard-code a specific file then the component works. However if I use a file connection that has an expression defined which updates the connection, for example when you have a for-each loop looping over a set files. The file connection doesn’t seem to re-evaluate expression each time you access the file connection via the code.
I have manage to fix this probelm by change the way my code worked.