multiple tables - different PowerBI pages

Hi

I created a dashboard from an excel table (lets called it Table1). In Power BI, I created a new page but I want to create a new dashboard from totally different excel Table (Lets called it Table1 and lets say it is in different file). So in the page 2 of Power BI, I removed Table1 from the model but that effected page 1 and I lost all visuals in page1. 

My question, can I create a new page in Power BI and get Table from totally different Table from page 1 table?

Also I noticed that, If I remove a table from a model (Right click --> Remove from model) I wont be able to undo that, is that right?

Thank you very much.