diff --git a/atom/README.md b/atom/README.md
index 2488b89..41bd36d 100755
--- a/atom/README.md
+++ b/atom/README.md
@@ -137,20 +137,42 @@ Physical Storage
 php symfony csv:physicalobject-import /path/to/storage.csv
 ```
 
+## Update CSV
+
+  - Export of https://adchio2941.xyz.org/index.php/x5cp-w5q6-9z53 as CSV using the clipboard
+  - Adding/changing fields, like scope and content
+  - Import CSV using "update" and checking "skip unmatched records".
+  - So far, we did not have a match for the top element "Mihaiela test", and the following link tells us why: https://www.accesstomemory.org/de/docs/2.7/user-manual/import-export/csv-import/#csv-descriptions-match-criteria
+
+### Matching criteria 1: legacyID and source_name.===
+  - legacyID was there in the CSV
+  - source_name was not. This is because `x5cp-w5q6-9z53` / Mihaiela test was not imported from an external source but originally created in AtoM. 
+
+so then the next matching criteria would be used.
+
+### Matching criteria 2: title, repository, identifier===
+  - title was there in the CSV.
+  - repository was not in the CSV, because `x5cp-w5q6-9z53` was not bound to a repository. I added it to "Test area for import"
+  - identifier was not in the CSV, because it had none. I added random number `8805` to this field.
+
+After my changes, I exported the CSV again, now with the nescessary data. Then changed "scope and content" and imported/updated as described before, and now it worked.
+
+So you should make sure, one of the 2 matching criteria groups are given.
+
+There is a `--roundtrip` version of the import command, which only checks for the `legacyID` to be a match. But this is only available on command line, not in the GUI.
+
 ## Regenerate Derivatives
 
 ```
 sudo -u www-data php symfony digitalobject:regen-derivatives
 ```
 
-## create login cookie
+## curl 
+
+### create login cookie and query using the API
 
 ```
-curl -k -c "cookie066.txt" -u "aarau:Fle8.CH" -X POST -d "email=support@docuteam.ch" -d "password=diCGi3-d13" https://066atom-cosmos.docuteam.cloud/user/login
-```
+curl -k --max-time 30 --retry 50 --retry-delay 5 -c cookie_atom55555.txt -u "uuu:xxx" -X POST -d "email=support@docuteam.ch" -d "password=xxx" https://55555atom-cosmos.docuteam.cloud/user/login
 
-## API
-
-```
-curl -k -b "cookie066.txt" -u "aarau:Fle8.CH" --get -d "sq0=_33424c68-97c1-4be6-9676-fd29a58ee08f" https://066atom-cosmos.docuteam.cloud/api/informationobjects
+curl -k --max-time 30 --retry 50 --retry-delay 5 -o result.txt -b cookie_atom55555.txt -u "uuu:xxx" --get -d "sq0=_c8434040-f2aa-4b6d-bc63-453e63bf5af7" https://55555atom-cosmos.docuteam.cloud/api/informationobjects
 ```
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