Don't worry too much, those includes starting with 'L' are part of the whole function group,you won't find then in the object directory (open on include with SE38/SE80 and in menu goto, execute Object Directory Entry) but are attached to the main object R3TR FUGR <function group name>.
During their creation if the function group was already locked in some transport request the Abap workbench won't add them to the request, only when you change them in another transport request will you see the sub-object entry in transport request L3TR LIMU <include name>. This same behavior occurs with function modules, text elements, menus or dynpros.
If the transport requests contain already the function group, every subobject attached to it when the request was released will be transported and imported. Else look for not imsported requests with the include, navigate from include to version management.
If the subobjects don't appear in SE80 you may be required to refresh the tree display, press icon or menu option or contextual refresh object list option. If that don't solve the problem you could even use the SE37 menu option Utilities, Repair Func. Group. You may also double-click on their names in the INCLUDE statement to navigate to them and force index rebuild.
Regards,
Raymond