Ywsolution,
Yup, pretty much your suggestion is what I carried out. I did an incremental dump of some of the database tables and checked for the result.
Here's what I found:
jos_categories
joc_contact_details
jos_content
jos_content_frontpage
Initial dump and upload into clean installation, no visible effect to begin with, however, the frontpage of the site became active with the jos_content_frontpage data pared with jos_content.
jos_modules
jos_modules_menu
jos_sections
jos_session
jos_users
jos_weblinks
Dump of data and upload into clean installation, structure started to become visible, with menus rebuilding. Admin access, even though I had uploaded jos_users, the majority were not visible.
Earlier, in another install I was mucking about with, I'd had a problem uninstalling a google analytics module / plugin. Eventually I found that I had to strip any reference to GA from the data held in the jos_modules and jos_modules_menu.
Finally, to bring all of the users back on line and visible in the admin backend, I uploaded the following data dump tables:
jos_core_acl_aro
jos_core_acl_aro_groups
jos_core_acl_aro_map
jos_core_acl_aro_sections
jos_core_acl_aro_groups_map
Lastly, as I am using community builder, I uploaded jos_comprofiler_lists after installing Community Builder.
Obviously, in order to tweak things back to the original site settings (minus the original 'bloat') which was my ultimate goal, there were a few things to be modified as usual in the admin backend, such as minor settings associated with visible menu items and the like.
Phew!! That was a big dive into some of the code behind Joomla!!
Thanks all for the assists with this and previous other questions for a noob.
Customscollector