The problem is "multiple databases". Depending on what you mean by "running imports", you might need to prepare them so that they accept a command-line parameter.
For example, the command
"" /x RunImports
Will open the specified database and attempt to run the macro RunImports. That macro can quit Access when done. That way, you could run a macro in each of your databases from a single batch file or script.
(°v°)