How to use the transfer feature within the “comprehensive google map plugin” v9.1


User guides


Installation and setup

The “Comprehensive Google Map Plugin” (CGMP) v9.1 includes a transfer feature, which allows you to easily convert your existing CGMP shortcodes into Maps Marker Pro shortcodes with 2 clicks. This tutorial gives you some background information about that feature and hopefully answers any open questions – if not, please add a comment below or get in contact!


In order to be able to convert your CGMP shortcodes into Maps Marker Pro shortcodes, the plugin “Maps Marker Pro” v3.1.1 (not 4.0 or higher!) has to be active and a valid (free 30-day trial or pro) license has to be activated.

Please be aware that although the transfer mechanism has been tested thoroughly and is being used successfully since its first release, we suggest making a full database backup before finishing the transfer (clicking step 2/2), just in case any special issue arises. Once the transfer is finished, the CGMP shortcodes could only be restored from that backup!


Please beware of the following limitations before transfering your maps:

  • Google StreetView is not yet supported within Maps Marker Pro, but planned for a later pro release – see the roadmap for more details.
  • Display of KML or GeoRSS files is currently also not yet supported within Maps Marker Pro – an automatic transfer is not advised if you are using KML or GeoRSS files, as this info would currently not be available within Maps Marker Pro!
  • Displaying of photos from Panoramio is not supported – a transfer is not advised in that case, as this info would currently not be available within Maps Marker Pro.
  • Some features like map language, custom map styles as well as some map control settings cannot be set on a map level within Maps Marker Pro but only globally for all maps.
  • The transfer features first checks if the lat+lon values for an address are already cached by CGMP (if the map has been called at least once on frontend, this is true). If there are no cached lat+lon values for a given address, the transfer feature makes a Google API call to fetch the according lat+lon values. Google allows up to 2.500 geocoding requests per day – so if you have more than 2500 markers on your CGMP maps, please make sure to first open the map in question on frontend – so the transfer feature can used the cached values and not run into any Google API limits.

Transfer tutorial

To install Maps Marker Pro, you can either follow the install instructions or directly install the plugin on your  site by clicking the following button on the “Notice of plugin discontinuation” page within CGMP:


As next step please start a free 30-day trial (Option B) or activate your purchased pro license (Option A) on the Maps Marker Pro license settings page:


Important: do not update to Maps Marker Pro v4.0 or higher unless you have finished transfering your CGMP maps – the migration tool is only compatible with Maps Marker Pro v3.1.1 or lower!

Now switch to the CGMP transfer control panel by clicking on “Transfer maps to Maps Marker Pro” within the CGMP menu:


As a result you will see a table with all CGMP shortcodes used within your posts, pages, custom post types and widgets:


Now start the transfer by clicking on the button “step 1/2: ‘create Maps Marker Pro’ maps”. This will extract the informations from the CGMP shortcodes and will create new according maps within Maps Marker Pro:

You can now manually review the created maps by clicking on the link in column 2 and replace the CGMP shortcodes manually by  opening the content where it is used with the edit link in column 4.

You can also reset the transfer by clicking the button “or reset transfer and start again” – this will delete all created Maps Marker Pro maps and allow you to start the transfer again.

If you plan to automatically replace all existing CGMP shortcodes by clicking the button “step 2/2: replace existing CGMP shortcodes”, it is strongly advised to make a backup before, as after clicking that button, CGMP shortcodes can only be restored from that backup!

After you pressed the button “step 2/2: replace existing CGMP shortcodes”, you see a list of all maps created with shortcode and link to the content used:


As the transfer is now finished, the “Comprehensive Google Map plugin” can now be deactivated and optionally be deleted.


Q: What are the requirements for the migration tool?
A: Please be aware that the migration tool only works with Maps Marker Pro v3.1.1 or lower – so please do not update to Maps Marker Pro v4.0 or higher unless you have finished transfering your maps from CGMP to Maps Marker Pro 3.1.1!

Q: Is it safe to use the automatic replacement of CGMP shortcodes?
A: this feature has been tested thoroughly – nevertheless we recommend making a backup before using that function, as CGMP shortcodes could only be restored from a backup.

Q: Are you planning to continue the development of CGMP?
A: No, I just contributed the transfer function and will continue to add new features and improvements to Maps Marker Pro only. I do not have the ressources to develop both plugins.

Q: Will shortcodes in widgets be replaced too?
A: Yes, if you press the button “step 2/2: replace existing CGMP shortcodes”, all CGMP shortcodes in your WordPress installation (posts, pages, custom post types and widgets – native CGMP widgets and text widgets) will be replaced with the according Maps Marker Pro shortcode.

Q: Why doesn´t Maps Marker Pro allow adding shortcodes directly from the post edit screen?
A: Maps Marker Pro adds a “add map” button to the tinyMCE editor which allows you to search and insert created maps. You can also use shortcodes only to directly create maps without saving them to the database first (see this tutorial for more details).

Q: Do I need to buy a license to be able to test Maps Marker Pro?
A: No, just go to the license settings page within Maps Marker Pro to start a free 30-day trial.

Updated on 29 May 2022