XMLog allows you to modify certain fields for the currently selected entries or for all log entries. Note that it's a good idea to backup your log before making extensive changes using one of the menu items described in this section, see Backups for more information.
Edit/Date and Time for Multiple Entries allows you to increment or decrement the QSO date/time by some fixed value. This feature can be useful for changing log entries from local time to UTC.
The general strategy is to first select a subset of your log that contains the entries you want to adjust. This usually means searching your log specifying a date range. Remember that there are cases where you might need to go through more than one search/edit cycle. For example you might have some entries with Eastern Standard Time and other entries with Eastern Daylight Savings Time. This means some entries need to be incremented by 4 hours and others by 5 hours. In a case like this it may take some effort to select the appropriate subsets of the log but for large logs it's probably easier than editing entries one at a time.
Once you've selected a group of entries that need to be adjusted by some fixed value choose Edit/Date and Time for Multiple Entries and pick Currently Selected Entries. When the Change Date/Time dialog is displayed set the Add or Subtract option and then fill in the appropriate adjustment values (Days, Hours, or Minutes).
Edit/Date and Time for Multiple Entries also allows you to replace the date field with a fixed value.
Once you've selected a group of entries that need to be modified choose Edit/Date and Time for Multiple Entries and pick Currently Selected Entries. When the Change Date/Time dialog is displayed fill in the appropriate value for New Date.
If you have a log file with 30 meter entries with the frequency fields set to 10.000 rather than 10.100 you can use Edit/Change Frequency for Multiple Entries to update these entries. The general strategy is this:
If you have a log file with entries that don't have the Station Info fields set you may be able to use Edit/Change Station Info for Multiple Entries to update these entries. The general strategy is this:
Edit/Change Prefix for Multiple Entries allows you to change the prefix for all entries in your log or every occurrence within the currently selected entries. This can be useful when importing old logs that don't contain DXCC country information since XMLog's country guesses may not be accurate for countries whose prefixes have changed or have had their DXCC status changed to "deleted". See the Deleted Countries section of Importing and Exporting Log Entries for some examples using Edit/Change Prefix for Multiple Entries.