Bulk Import/Field Change Option

In previous databases I used I was able to do bulk imports into fields via an excel spreadsheet with the ID code against each record eg Say I had a list of References that had been entered slightly differently and I wanted to correct them quickly rather than go into each record to correct the entry I could change them in excel by copying and pasting down the column and run an import to the appropriate field in each contact using their unique code to ensure that the right records were getting updated. This is really useful for tidying up free-form fields into uniformed lists. Then you can change the field properties into a drop down list so that the entries are uniform after that. Is this possible with Clinic Office?