Importing List into Marketo so that it does not conflict with SalesForce

[Jeffrey_Hanraha]

Is there a way to import a list into Marketo that may have contacts that are already in SalesForce, without the list causing any problems with the individuals records in SalesForce?

Thanks

[Josh_Hill13]

Depends... what do you want to avoid?

[Jeffrey_Hanraha]

I don't want it to overwrite the leads current information or history of interaction in SalesForce. If they are a hot lead I don't them all of sudden become a cold lead.

[Grace_Brebner3]

This shouldn't happen unless you are overwriting the specific fields that control these definitions, OR there is a smart campaign within Marketo that updates those values upon a change that you incite by importing.

Have you had this issue before when importing lists?

[Dan_Stevens_]

Understanding how you can block field updates is a good start: Block Updates to a Field - Marketo Docs - Product Documentation