Consolidate One master excel file from multiple excel spreadsheets in different tabs

[excelmmurphy]

I am fairly new with excel to some point, i know enough to be dangerous. Anyways, here is my problem. I have a master file spreadsheet that contains a ton of columns. The column headers i use to sort data is the same across the board on all spreadsheets and tabs. I have a unique ID field in column A, well nearly all the columns have unique data in them. On there other tabs the same data is repeated however with new added columns or sorted differently. I would like to be able to consolidate all this information into the master tab spreadsheets. Though on the master is has the main data, i do not want to overwrite the existing data just do an update to the missing or new data that isn't on the master from the other spreadsheets.

I have looked on the web and can not find the best way to accomplish this. Any advice and guidance would be great with lots of in depth examples as well.

Thank you in advance for any help.