Custom Object Append Data Question

[Chelsea_Kiko]

Awesome thanks Sandy. You're very helpful! I am going to give this a try and we will see.

Thanks again for sharing your knowledge.

[Chelsea_Kiko]

How about for custom activities?  Sorry, but net new leads - will it import or do we have to write it in the API to add to the database directly before running the custom activity API?

Thanks!

[Chelsea_Kiko]

So Kenny Elkington​ - how would that show up then? They just keep overriding? I am sorry I am new to this all.