I do this all the time with Lightroom and Smugmug. Under the Publish Services on the left pane of LR, do you see Smugmug and then a list of all your galleries? That is what I see in mine. Any time I add, delete, or modify a photo that has been published to my Smugmug account, when you select that gallery, it will show you what pictures need to published, re-published, or deleted. You must create the gallery in LR first though.
Thank you for your reply. Yes, I see the same thing but what I am referring to are the actual Lightroom Collections and Collection Sets themselves on the left side under Collections. If I delete a photo from a Collection, how will that same picture get deleted from the corresponding Smugmug Gallery under Publish Services? Conversely, if I delete a picture from a Smugmug Gallery under Publish Services, how will that same picture get deleted from the Lightroom Collection under Collections? Is it possible to keep the Collection under Collections and the corresponding Gallery under Publish Services in-sync within Lightroom?
As I understand it, in order to keep Smugmug galleries in sync, you must define collections in the Smugmug Publish Services area. Otherwise, there is no way for LR to know what it is supposed to sync on Smugmug.
I don't see an option to create/define collections in the Smugmug Public Service area. I can only create Folders or Galleries or Smart Galleries. Do you have the ability to create collections there?
Right click on the Galleries in Smugmug Publish Services and you'll get a popup menu that allows you to create new galleries.
If you are using Jeffery Friedl's Smugmug publish plug-in you can do the following:
Create Normal Collection in LR i.e. "Sunsets"
In the Smugmug Publish Services create a new Smart gallery (call it Sunsets as well) (See instructions on Jeffery's site for specifics on doing this)
Once the empty Smart Gallery has been created then you can edit it in Lightroom to have the rule(s) like below:
Choose Source as Collection, Contains All, 'Sunsets' (as the text to match)
I could not test this out directly with Smugmug as I only have a Zenfolio account.
But the instructions on Jeffery's site look like this is applicable to either his Smugmug or Zenfolio plugin.
Now, if I add/delete a photo to the normal LR collection titled 'Sunsets' then the corresponding Smart collection in the Publish services shows the same.
You then have to click on the Publish button to get the actual website updated with the changes.
Hope this helps point you in the right direction for what you are trying to accomplish.