Bing Maps API - Merge Query

[Anonymous]

I have two tables in my powerbi desktop application.

Table 1:

200K rows with duplicate address values since customers at the same address have multiple accounts. 

Table 2:

Copy of Table 1. All columns except address have been removed. Duplicates of address were then removed. 30K rows of unique addresses remain. 

I have sucessfully connected to Bing Maps API and imported the Long/Lat for each unique address in Table 2. Now that i have the long/lat for all 30K rows in Table 2, I want to merge Table 2 with Table 1 on the address field to bring in the Long/Lat for each row in Table 1. 

Issue is, when appling this merge, the query applier starts merging the tables BUT also is looking up each row with Bing Maps for a second time!!! 

Anyone know how to add a step (in my case merge tables) with Bing Maps data in a table with out it querying the data with Bing Maps every time a new step is added? 

Thanks !